u/No_Door9970

I haven't played games since the ps2. I grew up with a Nintendo and super Nintendo and would like to get back into it with my 6 year old son. I have a shield pro and 2 shield controllers that work..the only thing I have been able to is to download a game in the form of an app from the Google play store. I see I have GeForce app but don't understand how to use it. I want to play games like call of duty or madden. Maybe the new soccer game fc26 or nba2k...if someone could point me in the right direction or try to explain what I need to do I would very much appreciate it.