Some clients don't manage certain events (e.g. polls can be posted to Primal but will be invisible on Nostria because it doesn't support polls, but it supports other things). So that's one reason you may not see events depending on the client. I explain events and demo this here: https://www.youtube.com/watch?v=wuJMOXz0a-g The video also demos how to run your own relay and back it up so you never lose your data as well (recommended). The other problem is distribution of attention for >95% of users: https://daniella.io/nostr-retention-structural-diagnosis/