I need some help

I'm 18 and my parents want to give me a big gift for my birthday (that was 5 months ago and they're starting to get impatient bc for months i didn't have a single idea about what to choose), i've been thinking about choosing a gaming laptop and use Linux on It, i've allready investigated some thing like proton and how to use It for example.

The two questions i have are:

How can i know if a online game is playable on Linux? This one is crucial bc i'm a Tekken scrub and i play this game almost every day and if i can't play Tekken maybe i'll pass and use Windows and i prefeer not having Bill Gates in my PC

Is there anyway i can instal a game i buyed on Microsoft store in a pc using Linux? This one is not that important but one of my favourite hack and Slash games is Ninja Gaiden 4 and i buyed It on Microsoft store bc It was cheaper there than Steam and i wasn't even thinking on using Linux.

Thanks anyway and have a good day