To be honest, Gajim for Desktop and Monocles for android are an extremely accesible combination to present to new people.

I'm trying to move my friends away from corpo platforms but screensharing is proving to be a real bottleneck. AFAIK movim's client is the only one that supports screensharing but needs a chromium browser to share audio, also I think thw client is overall really ugly and sluggish so I don't recommend it a lot.