You set yourself up for what is coming. Have a good day friend 😊
Play any SPG in world of tanks
No keyboard needed, only to insult your team.
Hearts of Iron IV, Europa Universalis IV Crusader Kings II Stellaris
Slapping a bypasser exdee
Darkest dungeon on hardest difficulty you will finally know the feeling of getting assfucked
CSGO with cheats.
It's pretty common nowadays
The civilization series are probably the best games to play with only a mouse. I'd recommend Civ 5 (with all expansions) to start with. Other candidates are Hearthstone, XCOM 2 or perhaps some isometric RPG like Pillars of Eternity.
edit: and OSU, ofc!
Do you have only one hand?