Salutations, my fellow gamers. 
I beseech the collective knowledge of this forum for the answer to the following question:

Is there an (ideally free or "acquirable") way to immerse me within a virtual environment while I play games with a mouse and keyboard? The desktop window on Windows Mixed Reality's home isn't too great. I would like to play Escape from Tarkov in particular from a bunker or some other locale that could be imagined within its universe or STALKER's.