That's why you give different ages to different sites.

Can minors really not have email accounts?

https://support.google.com/families/answer/7103338?hl=en Google's policy is that under 13 you can have a supervised Gmail account. I think that's fairly standard for major providers

Depends on the jurisdiction I guess, now that we’re Balkanizing the internet.

"configure your reported age on a application/website basis."