why isn't it available on mac, web version?
technical restrictions with the latest version of Godot, and some features that aren't supported by any Mac browsers yet. Hopefully that changes soon, when it does I'll update!
it's that the reason why most godot 4 games i try to play in my browser crash?
Yep. I wrote some OS detection code on the embedded page to stop it from doing that
thanks for the info, is the godot team aware of this issue or should i report it?
They're aware, but a new report never hurts!