Proton were forced by swiss court order to log the IP address of a climate activist, which led to his arrest, but as far as we know they never actually breached his encrypted emails.

Tuta had a similar incident, but due to being based in Germany, had to go farther, and allowed access to any emails that weren't encrypted for the court ordered individual.

That only matters if you believe you will be a person of interest for your government, and the lesson is that no email service is perfectly safe for things that require that level of protection.

For most of us, any of the private emails will be fine, and are certainly better than Google.