Just type in any name you want, give the link to a friend and bam.
I don't have a Facebook messenger and believe me that's bad enough without also ditching Signal because eww phone number, Threema because eww nonanonymous payments, Telegram because eww no encryption, Element because it's unstable and I don't think my mom (let alone my grandma) would be able to use that UI effectively, Briar which can fundamentally not support voice calls, Jaimi which is about as stable as Windows 95 at launch when I tried it (and this wasn't an early beta, it was called Ring before iirc, it's gone through years of development), Wire which runs on USA infrastructure and isn't focusing on consumers anymore, et cetera and so on and so forth. I've actually got most of these apps and it's already hard to find common grounds when literally everyone else has Facebook's WhatsApp and they're wondering why I'm being difficult if they're not techies or privacy nuts themselves.
I'd rather have nothing to do with weirdos who require an "app" to communicate, and I say that having been using voice chat online since Iparty. (1997)
Iparty. Battlecom. Roger Wilco. Ventrilo. Teamspeak. Skype. Mumble. Discord etc
Until recently, you could host your own server on most of these. I want to go back to that. I'm sick of relying on other people for things to be up. Jitsi Meet is great.
Also I suspect you're trolling everyone.
Do you need to give a phone number or even email address to get on IRC? No. What about Ventrilo, Mumble, or Teamspeak? No. What about Skype? Yeah. Email.
Email is about as far as I go. If they want more than that (phone number etc) they can fuck off. How is that out of the ordinary? Because I'm not a cell phone newbie to the internet? I've been here for a long time and the personal information demands from all these piece of shit "services" are egregious when we have open source and self-hostable options that STILL WORK.