Implementing touch buttons to my sous vide cooker

#include<EEPROM.h>
#include <OneWire.h> 
#include <DallasTemperature.h>
#include <SPI.h>
#include<EEPROM.h>
#include "Adafruit_GFX.h"
#include "Adafruit_HX8357.h"
#include "MCUFRIEND_kbv.h"
#include "TouchScreen.h"

#define YP A2  // must be an analog pin, use "An" notation!
#define XM A3  // must be an analog pin, use "An" notation!
#define YM 7   // can be a digital pin
#define XP 8   // can be a digital pin

// This is calibration data for the raw touch data to the screen coordinates
#define TS_MINX 110
#define TS_MINY 80
#define TS_MAXX 900
#define TS_MAXY 940

#define MINPRESSURE 10
#define MAXPRESSURE 1000



// The display uses hardware SPI, plus #9 & #10
#define TFT_CS 10
#define TFT_DC 9
#define TFT_RST -1

Adafruit_HX8357 tft = Adafruit_HX8357(TFT_CS, TFT_DC, TFT_RST);
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);


#define ONE_WIRE_BUS 3 //temp sensor

OneWire oneWire(ONE_WIRE_BUS); 

DallasTemperature sensors(&oneWire);


int potPin =A5; //potentiometer for setting temp
//int relay0 = ;
int relay1 = 4;   //relay swich

const int stsp = A0; //start stop
const int inc = A1; 
const int dec = A2;
const int set = A3;
const int buzz = 6;

int tempval = 0; 
int val = 0;
int hrs = 0;
int Min = 0;
int sec = 0;
unsigned int check_val = 50;
int add_chk = 0;
int add_hrs = 1;
int add_min = 2;
bool RUN = true;
bool min_flag = true;
bool hrs_flag = true;


void setup()
{
  
  Serial.begin(9600);
  tft.begin();
  tft.setRotation(1);
  tft.setTextSize(4);
 
  
  tft.fillScreen(HX8357_BLACK);
  tft.setCursor(0, 0);
  tft.print("ELECTRONIC ");
  tft.print("by kakou");

  
  pinMode(stsp, INPUT_PULLUP);
  pinMode(inc, INPUT_PULLUP);
  pinMode(dec, INPUT_PULLUP);
  pinMode(set, INPUT_PULLUP);
  pinMode(buzz, OUTPUT);
  pinMode(relay1, OUTPUT);
   
  
  
  
  
  if (EEPROM.read(add_chk) != check_val)
  {
    EEPROM.write(add_chk, check_val);
    EEPROM.write(add_hrs, 0);
    EEPROM.write(add_min, 1);
  }
  else
  {
    hrs = EEPROM.read(add_hrs);
    Min = EEPROM.read(add_min);
  }
  delay(1500);
  INIT();
}

void loop()
{
  
  
  
  
  
  
  
  
  if (digitalRead(stsp) == LOW)
  {
    tft.fillScreen(HX8357_BLACK);
    delay(250);
    RUN = true;
    while (RUN)
    {
      if (digitalRead(stsp) == LOW)
      {
        delay(1000);
        if (digitalRead(stsp) == LOW)
        {
           
          tft.fillScreen(HX8357_BLACK);
          tft.setCursor(0, 0);
          tft.print("  TIMER STOPPED");
          tft.setCursor(0, 1);
          tft.print("----------------");
          delay(2000);
          RUN = false;
         
          break;
        }
      }
      
      sec = sec - 1;
      delay(1000);
      if (sec == -1)
      {
        sec = 59;
        Min = Min - 1;
      }
      if (Min == -1)
      {
        Min = 59;
        hrs = hrs - 1;
      }
      if (hrs == -1) hrs = 0;
      tft.setCursor(0,0);
      tft.print("      ");

 val = analogRead(potPin);
  tempval = val/10;
  Serial.print("The set temp is: ");
  Serial.print( val/10);
  Serial.println(" ...DONE");
  Serial.print(" Requesting temperatures..."); 
 sensors.requestTemperatures(); // Send the command to get temperature readings 
  Serial.println("DONE"); 

  Serial.print("Temperature is: "); 
  Serial.print(sensors.getTempCByIndex(0));
  delay(1000); 
  Serial.println(""); 
  Serial.println("");

  if(sensors.getTempCByIndex(0) > tempval+1)
  {
    digitalWrite(relay1,LOW);
    
  }
  if(sensors.getTempCByIndex(0) < tempval)
  {
    digitalWrite(relay1,HIGH);
  }
       
      tft.fillScreen(HX8357_BLACK);

      tft.setCursor(0, 0);
      tft.print("SET TEMP: ");
      tft.println(tempval );
      tft.print("  Water temp:");
      tft.println(sensors.getTempCByIndex(0));
      tft.print("       ");
      
      if (hrs <= 9)
      {
        tft.print('0');
      }
      tft.print(hrs);
      tft.print(':');
      if (Min <= 9)
      {
        tft.print('0');
      }
      tft.print(Min);
      tft.print(':');
      if (sec <= 9)
      {
        tft.print('0');
      }
      tft.print(sec);
      if (hrs == 0 && Min == 0 && sec == 0)
      {
        
        
        RUN = false;
        for (int i = 0; i < 20; i++)
        {
          digitalWrite(buzz, HIGH);
          delay(100);
          digitalWrite(buzz, LOW);
          digitalWrite(relay1, LOW);
          delay(100);
        }
        INIT();
      }
    }
  }
  if (digitalRead(set) == LOW)
  {
    delay(100);
    while (min_flag)
    {
      
      tft.setCursor(0, 0);
      tft.print("SET MINUTE: ");
      tft.print(Min);
      delay(100);
      tft.fillScreen(HX8357_BLACK);
      if (digitalRead(inc) == LOW)
      {
        Min = Min + 1;
        if (Min >= 60) Min = 0;
        delay(100);
      }
      if (digitalRead(dec) == LOW)
      {
        Min = Min - 1;
        if (Min <= -1) Min = 0;
        delay(100);
      }
      if (digitalRead(set) == LOW)
      {
        min_flag = false;
        delay(250);
      }
    }
    while (hrs_flag)
    {
      tft.fillScreen(HX8357_BLACK);
      tft.setCursor(0, 0);
      tft.print("SET HOUR: ");
      tft.print(hrs);
      delay(100);
      if (digitalRead(inc) == LOW)
      {
        hrs = hrs + 1;
        if (hrs > 23) hrs = 0;
        delay(100);
      }
      if (digitalRead(dec) == LOW)
      {
        hrs = hrs - 1;
        if (hrs <= -1) hrs = 0;
        delay(100);
      }
      if (digitalRead(set) == LOW)
      {
        hrs_flag = false;
        delay(250);
      }
    }
    if (hrs == 0 && Min == 0)
    {
      tft.fillScreen(HX8357_BLACK);
      tft.setCursor(0, 0);
      tft.print("  INVAID TIME");
      delay(2000);
    }
    else
    {
      EEPROM.write(add_hrs, hrs);
      EEPROM.write(add_min, Min);
    }
    INIT();
  }
}

void INIT()
{
  hrs = EEPROM.read(add_hrs);
  Min = EEPROM.read(add_min);
  sec = 0;
  tft.fillScreen(HX8357_BLACK);
  tft.setCursor(0, 0);
  tft.println("Start / Set Time");
  
  if (hrs <= 9)
  {
    tft.print('0');
  }
  tft.print(hrs);
  tft.print(':');
  if (Min <= 9)
  {
    tft.print('0');
  }
  tft.print(Min);
  tft.print(':');
  if (sec <= 9)
  {
    tft.print('0');
  }
  tft.print(sec);
  min_flag = true;
  hrs_flag = true;
  delay(500);
}

I have an 3.5’’ 480x320 tft lcd touchscreen from adafruit in spi mode on my arduino uno with a simple temp sensor and a relay swich
i want to put touch buttons instead of normal ones for the functions of

const int stsp = A0; //start stop
const int inc = A1; // increasing time
const int dec = A2; //decreasing time
const int set = A3; //set time

i dont want anything fancy just ordinary square buttons for each function
do u know where should i start ,any sources or some examples that i could learn how to do it
p.s sorry for bad english and i know my code isnt optimal i yet have to learn a lot of things any help is welcome even unrelated