I use Jami and love it. If you want to use it on a de-googled phone you may not get live notifications though, which is annoying if you want to use it for calls. The simplest solution is to allow it to run in the background but it also allows you to use selfhosted push notifications which is cool. I just let it run an accept the hit to to my phone’s battery. Jami is fairly easy to use and looks friendly too, which is helpful for getting non-technical friends to join you on it.

I struggled with Nextcloud Talk too.

Highly recommend Jami 👍