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).
https://molly.im/

get it on #accrescent and it will auto-update direct from and signed by the dev

https://accrescent.app/

that should get you started 🤙💜 

 oh and #orbot too 

 #grapheneos apps starter guide 🤙💜

nostr:nevent1qqsgvt9smuh567gusrfr5jl7lnljunsl7u9ukvjcpcyf4ezdkq38nugpz4mhxue69uhk2er9dchxummnw3ezumrpdejqygzwhzp3p445ak2ud4n289dn6084txu9ltkg7a53mt75qk5jup2ad5psgqqqqqqsrtt5jj 

 Thanks for the info ava! 

 Have anyone port to realme x2 pro? ToT 

 only pixel