The popular messaging app Signal is currently experiencing server issues as reported by multiple user on X (formerly Twitter) and multiple sites such as downdetector.com .
So far no statement from Signal themselves, and their status website https://status.signal.org reports “Signal is up and running”
A message would not be going to everyone it would exist on your homeserver and the homeserver of whoever your messaging. Second your private messages would not be public u said it yourself its called encryption if u dont trust the encryption no point using signal in the first place. Third even if it made everything public the only meta data would be that u received a mesaage from someone at time xyz (not who just someone) look at sealed sender for more info on this.