For example, use a password manager, use 2FA.
Avoid using cloud services as much as possible, self host FOSS alternatives instead.
https://www.privacyguides.org/en/ This site tells you everything you need to know.
How does a password manager or 2fa do anything at all to protect privacy?
Security is related. With a password manager you don’t have to worry about credentials from one site being used on another.
I give a fake phone number to companies who ask for one. I also often sign up with temporary emails when possible.
Just a password manager. Not necessarily for security, but mostly for practical reasons.
Also using Linux, but that’s not the main reason.