You may want to take a look at the list here https://www.privacytools.io/#email for alternative email providers with higher privacy standards.
Just switched to Fastmail and so far has been very easy and simple.
I personally switched to ProtonMail, but I lament there's no IMAP access.
If you don't mind paying you can use FastMail
Big fan of FastMail. Roughly $50 a year to control my email destiny? No brainer.
Protonmail. I can afford the $50/yr. for better email and it's something I should have done a long time ago. I was a GMail user since GMail was a thing, though. It breaks my heart to see Google do this stuff, but I just can't morally stay with them. I don't know what they are, I don't know how compromised they are by the intelligence agencies that run this country, I don't know a lot of things.