Adding Sensor Readings into Web Browser

I have an LED array and I am controlling it through Arduino’s web browser using the Arduino Uno WiFi Rev 2. So far I was able to get the lighting control into the web browser, now I am trying to get the sensor readings into the web browser. The data is displayed in the serial monitor, so I am trying to get that over to the web browser. I am wanting to grab only the sensor readings and not the excess information. Any ideas or links that will help?

This is the code for the LED control:

#include <SPI.h>
#include <WiFiNINA.h>

#define led 9

// Arduino does not support connecting to 5G networks. 

char ssid[] = "SSID";
char pass[] = "PASSWORD";
int keyIndex = 0;

int status = WL_IDLE_STATUS;
WiFiServer server(80);

String readString;

void setup() {
  pinMode(led, OUTPUT);
  Serial.begin(9600);

  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to Network named: ");
    Serial.println(ssid);
    status = WiFi.begin(ssid, pass);
    delay(10000);
  }
  server.begin();

  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);
}

void loop() {
  WiFiClient client = server.available();
  if (client)
  {
    Serial.println("new client");

    while (client.connected())
    {
      if (client.available())
      {
        char c = client.read();
        if (readString.length() < 100)
        {
          readString += c;
          Serial.write(c);
          
          if (c == '\n') {
            client.println("<a href=\"/?lighton\"\">Turn On Light</a>");
            client.println("
");
            client.println("
");
            client.println("<a href=\"/?lightoff\"\">Turn Off Light</a>
"); 

            delay(1);
            
            if(readString.indexOf("?lighton") > 0)
            {
              digitalWrite(led, HIGH);
              delay(1);
            }
            else{
              if(readString.indexOf("?lightoff") > 0)
              {
                digitalWrite(led, LOW);    
                delay(1);
              }
            }           
            readString="";

            delay(1);
            client.stop();
            Serial.println("client disonnected");
          }
        }
      }
    }
  }
}

This is the code for the light sensor:

#include <Wire.h>
#include <Adafruit_Sensor.h>
#include "Adafruit_TSL2591.h"

Adafruit_TSL2591 tsl = Adafruit_TSL2591(2591);

//Configures the gain and integration time for the TSL2591
void configureSensor(void)
{
 tsl.setGain(TSL2591_GAIN_MED);
 tsl.setTiming(TSL2591_INTEGRATIONTIME_300MS);

 Serial.println(F("------------------------------------"));
 Serial.print  (F("Gain:       "));
 tsl2591Gain_t gain = tsl.getGain();
 switch(gain)
 {
 case TSL2591_GAIN_LOW:
   Serial.println(F("1x (Low)"));
   break;
 case TSL2591_GAIN_MED:
   Serial.println(F("25x (Medium)"));
   break;
 case TSL2591_GAIN_HIGH:
   Serial.println(F("428x (High)"));
   break;
 case TSL2591_GAIN_MAX:
   Serial.println(F("9876x (Max)"));
   break;
 }
 Serial.print  (F("Timing:     "));
 Serial.print((tsl.getTiming() + 1) * 100, DEC);
 Serial.println(F(" ms"));
 Serial.println(F("------------------------------------"));
}
void setup(void)
{
 Serial.begin(9600);
 Serial.println(F("Starting Adafruit TSL2591..."));

 if (tsl.begin())
 {
 Serial.println(F("Found a TSL2591 sensor"));
 }
 else
 {
 Serial.println(F("No sensor found ..."));
 while (1);
 }
 configureSensor();
}
// The first "flag" for checking the Lux levels. If the Lux level is less than 500 then luxCheck will be 0.
// This is the yellow light
int luxCheck;

// Reads IR and full spectrum then converts to Lux and checks for less than 500 Lux value
void advancedRead(void)
{
 sensors_event_t event;
 tsl.getEvent(&event);
 uint32_t lum = tsl.getFullLuminosity();
 uint16_t ir, full;
 ir = lum >> 16;
 full = lum & 0xFFFF;
 Serial.println(tsl.calculateLux(full, ir), 6);

 if ((event.light < 500))
 {
   luxCheck = 0;
   Serial.println(F("WARNING: LUX NOT WITHIN DESIRED RANGE!"));
   Serial.print(F("Lux: ")); Serial.println(tsl.calculateLux(full, ir), 2);

 }
 else if ((event.light > 500))
   {
     luxCheck = 1;
     Serial.print(F("Lux: ")); Serial.println(tsl.calculateLux(full, ir), 2);

   }
}
// Arduino loop function
void loop(void)
{
 advancedRead();
 delay(2000);
}

A code snippet from some old server code that has the basic analog pin values in a web page.

          //output HTML data header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();

          //generate data page
          if(readString.indexOf("data") >0) {  //checks for "data" page
            x=x+1; //page upload counter
            client.print("<HTML><HEAD>");
            //meta-refresh page every 1 seconds if "datastart" page
            if(readString.indexOf("datastart") >0) client.print("<meta http-equiv='refresh' content='1'>"); 
            //meta-refresh 0 for fast data
            if(readString.indexOf("datafast") >0) client.print("<meta http-equiv='refresh' content='0'>"); 
            client.print("<title>Zoomkat's meta-refresh test</title></head><BODY>
");
            client.print("page refresh number: ");
            client.print(x); //current refresh count
            client.print("

");
            
              //output the value of each analog input pin
            client.print("analog input0 is: ");
            client.print(analogRead(analogInPin0));
            
            client.print("
analog input1 is: ");
            client.print(analogRead(analogInPin1));
                        
            client.print("
analog input2 is: ");
            client.print(analogRead(analogInPin2));
            
            client.print("
analog input3 is: ");
            client.print(analogRead(analogInPin3));
                                    
            client.print("
analog input4 is: ");
            client.print(analogRead(analogInPin4));
            
            client.print("
analog input5 is: ");
            client.print(analogRead(analogInPin5));
            client.println("
</BODY></HTML>");