It was a fun experience trying to get to all work. I did originally try on my raspberrypi but I ended up just giving up on that due to the issues you mentioned. But it's nice to have my own instance, and slowly populating the all feed with new subscriptions and well I owned the domain va11halla.bar I had to use it for my name.
I can't answer them all but I'll try the ones I can as a solo/small instance
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I don't know about suggested, but I'm someone who likes to tinker and look behind the scenes a little so that's why I made my own instance, plus being in control of everything. Also having my name @va11halla.bar is pretty cool
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The account is gone, no migration. Part of why I made my own instance is because my old was deleted. Due to federation you can still find content you posted at least, assuming it was federated beforehand
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You'll have to federate everything yourself if its your own instance. The all tab takes into account the subscriptions of everyone on the instance, so you'll see a lot less if you have a lot less users on your instance. The local tab takes in to account communities on that instance only.
Dungeon Maker is a fun little roguelike/strategy game I've been playing atm https://play.google.com/store/apps/details?id=com.GameCoaster.DungeonMaker&hl=en&gl=US You hire and level monsters whilst building a sorta dungeon with traps for heroes.
Since you mentioned Minecraft and farming simulator, both Terraria and Stardew Valley are on android, though I can't speak for their quality or playability.
Emulators are a pretty good shout, PPSSPP was pretty great when I last used it which was a few years ago now, so I imagine possibly better now and the PSP had a decent selection of games.
You could also try Google Play Pass for a month and look at a few paid games and see if anything tickles your fancy there, but subscription service.
Try Connect or my personal favourite atm is Liftoff.
https://play.google.com/store/apps/details?id=com.kuroneko.lemmy_connect&hl=en_US
https://play.google.com/store/apps/details?id=com.liftoffapp.liftoff&pli=1
I actually slept well for once which is always good. Waking up not knowing what year it is is a great feeling.
As someone running their own instance, since the update, new posts on lemmy.world have been federating comments fine from what I can tell. However posts from before the update were really hit and miss (mostly miss tbh) and I don't think they'll automatically be fixed.
I'm actually playing it now! If you've played it before and want a bit of a change, but without changing everything (and are on PC), I recommend The Midnight Ride. Read through the mods it adds to see if it's for you, but it all felt good to me mostly. The power armour changes are very nice for me. You can add other mods on top of this too if you wish (Fourville and Sim Settlements 2 are two I've added on top of as well and also recommend).
VA-11 Hall-A! One of my favourite VN if my instance url didn't give it away. It's not too long, listen to the start telling you to get cozy and then mix drinks and change lives.