I have a few games that I am playing at the moment, but a lot of them require at least some time commitment once you start a round. I’d like something that I can start now and maybe finish later. Something on the line of Solitaire or https://mergetin.com/ .
Seems you’re into puzzle games so I’ll recommend you that there’s an entire genre of minesweeper clones / inspired games on Steam. Some are straight up clones of the game, others are very similar, and some use the mechanics but twist them around in interesting ways. Good examples are Hexcells, Hexseed, Tametsi, DELETE, and GlobeSweeper. Once you learn the basic mechanics, they’re pretty hard to forget, and a lot of games borrow mechanics from others. When I started DELETE, for instance, the mechanics were a little bit different in some small ways, but I pretty much rocketed through the first dozen levels because of my prior knowledge of how minesweeper works.
Bloons Tower Defense 6 is easy to get into and also can return to the level if you quit out.
Overwatch 2. Since the changes from old Overwatch, there is no real point in anything other than Quick Play, which means 5-10 minute games, and you are free to leave at any moment
I really enjoyed Shovel Knight Pocket Dungeon. It’s on PC and consoles, but if you have Netflix on your phone you can play it there as well.
Brotato. Ridiculously addictive auto shooter with one minute waves. I play it in my downtime at work. There are interruptions with zero warning and it’s always easy to come back to later.