A bool is equal to the opposite of itself dosen't work

Why wouldn't it work? It should switch between true/false eachtime u press button.

I have tried, too, and it does work.

What is required, now, is to detail how you came to the conclusion you did, and compare that to other methods for deter$$anonymous$$ing this (I detail $$anonymous$$e below), to see what you've observed different behavior.

Using Visual Studio 2017, the following was tested using the debugger:

 using System;
 using System.Collections.Generic;
 using System.Linq;
 
 using System.Text;
 using System.Threading.Tasks;
 
 
 namespace ConsoleApp2 
 {
 
     class bcheck
      {
       public bool b = false;
 
       public void check() 
         {
          int n = 100;
 
          while( n > 0 )
             {
              b = !b;
              --n;
             }
 
         }
 
      }
 
 
     class Program 
     {
         static void $$anonymous$$ain(string[] args) 
         {
          bcheck bc = new bcheck();
 
          bc.check();
         }
     }
 
 }

This code uses a VS 'starting' console application to run a test. Within the loop the debugger was used to step through the code one line at a time, and the value of b was toggled between true and false (and back to true and the again to false) on every occasion exactly as expected.

It would probably be useful to have the rest of your code. Personally I would use "look ^= true" to flip a boolean to it's opposite state, but that may give you the same results depending on what is happening.

its pry not the bool asignment its pry something with your button. try this to confirm:

       if (Input.GetButtonDown("Look"))
          { print("if you dont see this in the console your click is not working");
              look = !look;
          }