Less is more. The only App that actually makes sense to add to your phone is maybe a minimalist launcher App. there are several options on F-Droid of them. Otherwise, to “dumb down” you just need to uninstall everything useless. Even prefer Webapps over normal Apps if services have them. This way its just a little more inconvenient to use your phone to much if you always need to go in the browser and search it.
You want less phone. Not more. So I really don’t see a need for anything else then a different launcher.
Less is more. The only App that actually makes sense to add to your phone is maybe a minimalist launcher App. there are several options on F-Droid of them. Otherwise, to “dumb down” you just need to uninstall everything useless. Even prefer Webapps over normal Apps if services have them. This way its just a little more inconvenient to use your phone to much if you always need to go in the browser and search it.
You want less phone. Not more. So I really don’t see a need for anything else then a different launcher.