Move from Gmail to Proton. The basic Proton account is free.
Proton helps you set up forwarding from the gmail account to the proton account. And their tool also helps you migrate your old emails.
If you pay €4.99/month or €47.88 for 12 months, you get username@pm.me but also the ability to use your own domain name - which I always recommend because it makes you more resilient.
I have no affiliation with proton, I just really want people to get off gmail and I know how people hate just thinking about moving 😅
https://proton.me