I tried moving off Gmail, I really did. But all the EU-based alternatives just suck so much. So now I'm back to Gmail, but I pay for it (Google Workspace). This way I at least have a commercial relationship with Google which gives me various contractual rights, and access to phone support. I also have a contingency plan: I have my email address on my own domain, and I backup my mailbox once in a while, so that I can migrate off Gmail should I need to do that at some point.