How to get windows maximized on whole screen(through/behind notch)?

I was trying to get my windows show on the whole screen on Air M4. I have tried the app setting in Finder to show behind notch, but that shows apps with weird aspect ratiothat won't even use full screen width. Is there way, through apps or otherwise to use full screen to show apps? Preferably free, but I'd be happy to pay small fee for safe app doing so.