On your phone in particular. I have all turned off except for signal messages from a few people.
Side question: Have you or anyone you’ve known “rang the bell” on content on youtube, twitch, etc? For how many channels? What (kind of dystopian nightmare) was that like?
If you mean audio alerts, none except phone calls and SMS. I do get a visual alert (little dot next to the home screen icon) when I have unread email, and there are a few more of those I guess. Oh yes, the alarm clock and timer, which I use sometimes, make sounds.
My sister misplaces her iphone in the house all the time, and uses Apple “Find My” to get it to make a very loud noise that helps her locate it. It’s way louder than a normal phone ring. I’d like to have something like that for Android, which sets off the noise if I send an SMS with a special code. In general though, I want my phone to not interrupt me except for occasional realtime communications with known humans.