There's also a small plugin I made which might help slightly with touch screen controls lol
https://github.com/Die4Ever/openrct2-touch-plugin/releases/latest
I wrote it a long time ago before realizing that plugins weren't supported on Android at the time, but they are now!
Speaking of https://lemmyverse.net/ the way you set your Home Instance is by clicking the house icon in the top right, and you would type in
retrolemmy.comin there