LCD pulsing text

Using Arduino Displays
4

i've tried another way, and it's working a lot better,

However, it has a big delay, about 2 seconds before it registers a button press and displays the text,
it's probably a silly mistake, but i am not sure what it is,
and not sure i can do this kind of sketch with a button matrix,

#include <LiquidCrystal.h>

int buttonPin1= 6;
int buttonPin2= 7;
int buttonPin3= 8;
int buttonPin4= 9;

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

int prevButtonState1;
int prevButtonState2;
int prevButtonState3;
int prevButtonState4;

void setup()
{
  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  pinMode(buttonPin3, INPUT);
  pinMode(buttonPin4, INPUT);
  
  digitalWrite(buttonPin1, LOW);
  digitalWrite(buttonPin2, LOW);
  digitalWrite(buttonPin3, LOW);
  digitalWrite(buttonPin4, LOW);
  
  lcd.begin(20, 1);
  lcd.print("Omsi Almex a90");
  delay(2000);
  lcd.clear();
}


void loop(){
  int buttonState1 = digitalRead(buttonPin1);
  int buttonState2 = digitalRead(buttonPin2);
  int buttonState3 = digitalRead(buttonPin3);
  int buttonState4 = digitalRead(buttonPin4);
 
  if (buttonState1 == LOW && prevButtonState1== HIGH){
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Fahrschein Nor  2.70");
    prevButtonState1 = buttonState1;
  }
  else if(buttonState2 == LOW && prevButtonState2== HIGH){
    lcd.clear();
    lcd.print("Fahrschein Erm  1.70");
    prevButtonState2 = buttonState2;
  }  
  else if(buttonState3 == LOW && prevButtonState3== HIGH){
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Tageskarte      9.00");
    prevButtonState3 = buttonState3;
  }
  else if(buttonState4 == LOW && prevButtonState4== HIGH){
    lcd.clear();
    lcd.print("    >>Drucken<<     ");
    delay(2000);
    lcd.clear();
    prevButtonState4 = buttonState4;
  }
    else{
    prevButtonState1 = buttonState1;
    prevButtonState2 = buttonState2;
    prevButtonState3 = buttonState3;
    prevButtonState4 = buttonState4;
 }
  }