SimpleX https://simplex.chat nostr:note1dfguxeddugr5x82g3vj7p5la9jmavrtysffnsr4waxfk2hz26l7s7wl4tg
You can use a #molly im app it is a open source and a rwlase is a github availability thank you
Signal has a backdoor anyway, which I knew about. I need to look into it more, but Signal is, indeed, backdoored.