i am probably repeating myself (but these topics repeat themselves too :))

If you are interested in switching away from Google, take a look at https://github.com/sovereign/sovereign

It is ansible playbook to setup most of the stuff you need daily (and extras on top) on own barebone dedicated/vp server. Super easy to get going. (not "Install" button like easy, but nowhere close to pains of setting up mail server, making sure antispam and dkim signing work, etc,etc,etc)