Self-host your data. I don't use any Big Tech solutions. Not Google. Not Apple. Not Microsoft. Not Proton. Not Tutanota. Etc...

Always keep you data in your own country.

In the US, as a US citizen, once your data goes international, it becomes legally easier for the letter agencies to collect and spy on your data.

It's sad, but you can't trust anyone. They'll all hand over your data the moment any government agency looks at them mean.