Any other mail service is already better than Google's. You don't have to host your own to get off Google, if that's what you're aiming for! There are a lot of other trustworthy providers. As someone who hosts their own email, I'd thank you for diversifying.

While, one the one hand, I don't have a lot of trouble with delivery even from a residential IP address and I'd recommend self-hosting, I understand anyone who's hesitant. My mail lands in Google spamboxes much more often than it should (I don't send any automated mail these days, i.e. not even website notifications or anything: everything is hand-written or at least triggered by the person receiving the email; my sending IP has been stable for a decade). Another downside of Google is that they hide the existence of the spam folder and many people will simply never see it and be able to update its filters by replying to me or marking it as not-spam. Heck, some Google-for-corporate mail service even blocks your email at smtp level and there is no recourse. By diversifying receiving servers, at least Google doesn't get to set one standard: if your mail doesn't arrive in a Google inbox, it's currently extremely hard to argue that "but it's google's fault" (when it totally is). Clearly I as an individual have an issue and the big google doesn't.