Bluetooth Serial Relay and push button.

Projects General Guidance
7

BTW

    val2 = digitalRead(pushButton);   // read the input pin
   
  if (val2 == LOW) {
    // turn LED on:
      digitalWrite(Relay1, HIGH);    // turn Off pin 2
    }
      if (val2 == HIGH) {
    // turn LED on:
      digitalWrite(Relay1, LOW);    // turn Off pin 2
    }

is much more simply expressed digitalWrite (Relay1, ! digitalRead (pushButton));. It also neatly sidesteps the obvious/incorrect comments.