WhatsApp with most people (because that’s what everyone uses), Telegram with the people I talk to a lot (a few college friends and my parents). Insta here and there, but that’s mostly for people to send me reels, I don’t really use the app for anything else. I’ve not used Facebook or the messenger for many years.
I could never do that lol. I barely care enough to talk to people and even I’d feel a little alone/I don’t like inconveniencing people. I do use Telegram for some people, but Signal is just used by nobody I know.