infjarchninja

yes, you can still use signal, molly and signal-foss. I have signal on my desktop and some of my family have molly and some signal-Foss.

The signal servers are primarily hosted on AWS with redundancies on Azure or Google Cloud. Molly and Siganl-FOSS use these too.

The official Android app generally uses the proprietary Google Play Services, although it is designed to be able to work without them.

Hence we use the signal-FOSS and Molly on our phones that do not have any google services.

Like any AOSP rom, Lineage, there are no google play services.

Its the google firebase that manages push notifications that seems to be the main privacy issue.

MollySocket allows getting signal notifications via UnifiedPush, not google firebase,

https://github.com/mollyim/mollyim-android

There is also signal-FOSS as an alternative to signal and Molly

Signal-FOSS

https://www.twinhelix.com/apps/signal-foss/

A fork of Signal for Android with proprietary Google binary blobs removed. Uses OpenStreetMap for maps and a websocket server connection, instead of Google Maps and Firebase Cloud Messaging.

add the repo to your app store to F-droid basic

https://fdroid.twinhelix.com/fdroid/repo/

The twinhelix repo is in the droidify and neostore repo list.