What are some games to play when suffering from crippling loneliness?
Something as fast paced as possible. Bayonetta helped me a lot. Or platformers. Stay away from anything with grind or you'll be swept away into your loneliness as soon as you get a little bored.
Honestly these are the only two genres which really cater to loneliness. But I suppose any type of game you can just immerse yourself in for hours at a time or try and git really gud at.