I use Privacy Friendly versions of Sudoku and Minesweeper on the F-Droid store. I also really enjoy Nonograms (aka Picross), and haven’t found a good foss app for it, but the app “nonograms.com” has been a good experience for me. I paid like $5 for the ad free version and that’s been it, nothing else.
As a user of a Xperia One IV, I can say I’ve been very impressed and very happy with my phone. One of the few good phones that still has a headphone jack and a microsd card slot, both of which I regularly use. When it runs out of updates at some point, I can install a custom OS on it like Lineage, so it’s been awesome and I’ll be using this phone for years to come. If you can afford one (since they are quite expensive, I got mine on a sale and it was still expensive), I highly recommend it.
This works for me! Thanks a bunch!