How to play online after xbox one dies?

My son's xbox one died and cannot be fixed. I refuse to buy another one and had purchased a couple games online for the box once the disk drive died. The technician told me the new controller I purchased could make gaming on the internet of laptop possible. How can I do this? I logged into our microsoft account and can't see my purchased games. How can I find them? Do I have to buy some game pass subscription??

:)