To protect your privacy on the Internet, it’s best to create different identities (first and last name, age, gender, etc.) for each site you visit, or to create a single false identity for all sites.
I’m planning to create a new Google with false information. Is it better to reuse this false information on other accounts, or to create a new one for each new account?
It’s up to you. Just be aware that every time you use the same username/email for an account, all those accounts can be linked. There are times when you want multiple accounts to be linked and there are other times when you don’t. For example, my mfwmyfacewhen account here is intentionally linked with my GitHub and Matrix accounts. But I have many others that I try to keep separate.