I used Signal like 3 times over several months, years ago. One day, I got some jack-off "alert" telling me about "people I know" who are on Signal. I never told Signal who I know, and kept no contacts in the app. I immediately, and I mean instantaneously, deleted the app and haven't used it since. This was ~5 years ago. Of course there's a fucking kike running it now; it's always been a scam, and kikes are attracted to scams.