I'm a big fan of Matrix, but I'm embarrassed to recommend it to my friends until Element X supports audio calls... It's been months since the leading-edge release, and I don't know what to think: there's Element Call, however it's neither supported by Element X nor real alternative to legacy peer-to-peer audio calls.
Element X natively integrates Element Call for voip/video calls - this is one of the core things of this week's release. If you hit the video call button, it'll start off with video muted, and it should behave like a voice call (although there are a few bugs in the integration still, hence it being marked beta - especially on iOS, where CallKit + WebRTC stopped working in iOS 18. We're trying to work with Apple on it.)
I don't want to turn off the camera in the video calls; I wish to have normal audio-only calls like in any other app like Whatsapp where there's a "Phone" button that starts a call.