For email I suggest getting your own domain name. That way you can easily change provider without having to tell all of your contacts to use a new email. I don't know about all domain providers, but some provide email addresses for free with all the domains that you bought from them. It's a really good and way to have an interesting email address, and not be dependant on any tech giant.

I personally gave up on the idea that my email will ever be secure, so I just try to use a provider that seems trustworthy, and avoid using it for anything critical. The email providers that tell you they encrypt your emails don't really improve anything in terms of security, given that they have access to the clear text email before they encrypt it. It's even worse if they offer a web client, they could steal your keys anytime.

There are solutions (PGP), but they are really niche and don't provide some critical security aspects like Forward Secrecy. If you want your communications to be truly secure, use a system that was built for that (Signal, Matrix, etc.. all provide pretty decent security way ahead of whatever you'll get with email).