Privacy

Hey all, I've been taking my digital privacy and security much more seriously this year, but the one thing I've been stuck on and feels overwhelming to me is email. So I wanted to know what do you guys use or what practices do you follow? Do you keep a separate email or alias for every single account, or just compartmentalize, like one email address for online shopping, one for business, one personal correspondence, and etc.

What services do you use? Right now I have a free Tutanota and ProtonMail account but haven't decided which one to pay for, if either. ProtonMail makes me iffy with the amount of controversy and debate that has come out of them in recent years even though it comes with a lot of other nice stuff like cloud storage and a vpn. Tutanota I just dislike the fact I can't add it to third party mail apps like Thunderbird, but this might not be a deal breaker. I know there are others, so what do you guys use? I don't need something to protect my emails from the NSA or organizations like that but definitely something more private and secure than gmail. Thanks.