Don’t agree. Being hosting my email server for 20+ years without issues.

Yes you need to study, no its not difficult at all.

Check wiki.gardiol.org/doku.php?id=email%3Astart it’s really that, and guess what? It works!

So, yes its getting more complicated but its still well at the grasp of a home hoster.

Do you want it as simple as docker compose up? Grab mailcow.