I've tried to switch to signal, but the lack of a desktop app when using iOS is a major problem for me. I'm probably in the minority with this concern.
Telegram is great for that... but I think their desktop client still doesn't support Secret Chats, which are kind of important if you want encryption.
Telegram has gotten a lot of criticism for their crypto though? Kinda on the fence about using it
That's what I'm saying, it's by far not the most secure, and if you don't use Secret Chats it's even more so. Convenient, though, and not owned by Facebook. I'm on the fence about it myself, but it's my go-to alternative to Facebook Messenger and WhatsApp, not necessarily to Signal.
I'm also going to be in that minority since I am moving away from android to iPhone.