Bruh.. Lol

You clearly don't understand how encryption works to be commenting on the subject matter. Especially when you openly admitted:

> I'm not sure how exactly Signal and these other messaging apps implement their encryption

For starters, both Signal and WhatsApp use the Signal Protocol: an encryption standard that was engineered by Signal in-house. Also, Signal is open source meaning that anyone can verify their source code on how the app was constructed. Signal wouldn't tamper with their code and even if they did, Signal is set up in such a way that any adversary that wanted to snoop would need the device itself to discover the messages.

Do more research my friend.