If you own your own domain the you can use a paid tier of a service like Proton or Tuta where the emal is you@yourdomain.tld and the backend is actually them, so you don't need to selfhost.
Tuta's nice (Germany), the only think Proton (Switzerland) as over it - for me - is an .onion site, although they leak a lot of links onto clearweb. I've heard of Fastmail but haven't tried it.
Which jurisdiction?