i recommend ditching f-droid if at all possible and using neo store instead.
here's why:
https://www.privacyguides.org/en/android/?h=apk#obtaining-applications
a good open source apk workflow is this:
git apk (signed from dev)/accrescent > neo store (use official repositories whenever possible) > google play
use #obtainium to track and keep apks up to date. it's awesome
https://github.com/ImranR98/Obtainium
and i recommend #molly (a hardened fork of signal).
get it on #accrescent and it will auto-update direct from and signed by the dev
that should get you started 🤙💜
