The development of UAD has been stopped/paused. The fork Universal Android Debloater Next Generation continues it

Here you can find (at least for Android) app lists for Fediverse apps (take also a look at the subcategories): https://android.izzysoft.de/applists/category/named/fediverse?lang=en

Whether the apps you need work depends less on the device than on the OS and whether the app works without Google services or at least with MicroG. I have no experience with this, but there are a few community-lists:

Here you can find a list of whether and which banking apps run with eOS (i.e. with MicroG): https://community.e.foundation/t/list-banking-apps-on-e-os/33091

Here a list of apps in general: https://community.e.foundation/t/list-apps-that-work-or-do-not-work-with-microg/21151 Doccle is listed there: “‘Doccle’ (Belgian administration app) Works perfect without Google.”

My answers from Firefish unfortunately do not arrive here on Lemmy. It would be great if it basically worked from Firefish, now. If it is instance-dependent, I would perhaps change the instance, because Firefish offers many advantages compared to Mastodon.

Here you can search for Commnunitys across (almost) all instances: https://lemmyverse.net/communities This exists: https://lemmy.ml/c/epilepsy But it still seems to look inactive

You may use this tool to search communities: https://lemmyverse.net/communities