I decided to use my phone to read after my Kindle broke. I use KOReader. I would like to not support proprietary products as much as I can, just my personal philosophy since the last 7-8 years. So far I can’t complain about my setup, and there is one less device to lug around. I do miss an e-ink display sometimes though.
I switched to Pipepipe from Newpipe because I wasn’t sure Newpipe was being maintained. Pipepipe has SponsorBlock.
Most of the Paradox games support Linux natively. I play Europa Universalis 4, Stellaris, Crusader Kings 2 (haven’t bought 3 yet but it has native support), Hearts of Iron 4. Victoria 2 doesn’t have native support and I didn’t get Vic 3 but it is supported. Rimworld is native, so is Factorio.
Have a look at what you want to play on protondb.com and figure out if gaming on Linux works for you. Baldur’s Gate 3 has a gold rating (gold being one level lower than platinum - the best rating for non-native games) which for all practical purposes should work.
EDIT: I recommend installing Proton Glorious Eggroll in addition to the native Proton on Steam if you can’t get a game running with the native Proton despite protondb reports saying the game works. The installation is fairly straightforward, just read and follow the installation instructions on the page.
DivestOS has ceased maintaining Mull if I remember correctly. I use Ironfox on Android now.