If you do want an email address in perpetuity, I would go to GoDaddy.com and buy a domain. You can buy your name, or something more innocuous. Then pay them the few bucks a year to have them host it - or take the domain somewhere else for hosting. But the value in doing this is that nobody can close down your email address on you because you can just move it somewhere else, and since you’re paying for hosting, you shouldn’t have to deal with advertising or have to sign away your privacy rights (but read the user agreement carefully.)
If it is located in the USA, the Feds, alphabet, and “law enforcement agencies” can and will clandestinely access it. There is no privacy and there are no secure Internet domains here in the USA. That is why we have used Fastmail, located in Australia for over two decades.