Celeste is pretty fun platformer, though be warned, as you'll die a lot through trial and error. You may dislike it if that's not your thing. It's on sale right now on Steam.
Some indie recommendations - into the breach (possibly the best tactics puzzler ever devised) - disco elysium (possibly the best rpg ever devised) - hades (possibly the best rogue-like ever devised)
If you have a PS5, Ghost of Tsushima is a better “Assassin’s Creed” than Ubisoft will ever make.
Detroit: Become Human, by Quantic Dream
Could try Mystik Belle, it's a pretty great platformer. If you want something more meaty Fallout New Vegas and Homeworld are pretty good at whiling away the hours. If you want to lose 10k hours, grab Minecraft and install the GregTech New Horizons modpack.