What do you think about Session? https://getsession.org/
Idefinitively abandon Telegram.
If you want to contact me you can always do it here or in http://simplex.koalasat.xyz
Discussion
We initially had Robosats Dev chat there, but it was abandoned like 2 years ago because we just decided to move everything to SimpleX.
Back then the reason was Session was lacking some basic community chat features. But I think the only good reason we had for SimpkeX was it doesn't need any user ID.