I reliably use matrix bridges to chat with ppl on Whatsapp, telegram and Facebook. If you don’t want to go into self-hosting I think beeper has a hosted version of it. Unfortunately Whatsapp is the only annoying one, as it forces you to switch on the android version once every two weeks (which you can do in several ways).

There are many more brides, but haven’t tried those myself. I’m general the “mautrix” ones tend to be very solid. https://docs.mau.fi/bridges/