Oh cool, so even though my thoughts on your release were overall positive, instead of being reasonable regarding the extremely minor criticism I gave regarding a function that is available in virtually all games, which is a pretty universally expected QoL feature and which, again, has a function for it built into Unity which would only require you to add a few additional lines of code and a basic button to enable/disable it, you decide to seethe and sarcasm-post because you need me to Google something for you.
https://docs.unity3d.com/ScriptReference/Screen.html
https://docs.unity3d.com/ScriptReference/Screen-fullScreen.html Enjoy!