I'd have a mooch in the free to play games first then, there's a few things in there which could give you a good few hours. COD Warzone is free, and a lot of fun.
Also, if your connection is upto it get ps now for a month or something, very much bang for buck tbh.
That'll be a fun start for you, I struggle when you're not into RPG/Fantasy as diablo III would have been my first recommendation and it's on sale ATM too.
Inside is a cracking little indie game, don't know what price point that is these days, although it's not massively long thinking about it.