Not quite, but there is a workaround that you can possibly use.
It would depend on just what you mean by "tied into it", keeping in touch with email contacts is easy, Android apps may be a bit more difficult and you'll have to change it in each individual app that you have used it in, or possibly re-register with the app and start from scratch.
You can set a gmail account to automatically forward all emails to another email address.
I have that set on my gmail, so all emails received by my gmail are automatically forwarded to my private email.
You can forward to a different gmail address.
So you can set up a new gmail address, which gives a new google account, and then set the old one to forward to it.
https://hotter.io/docs/email-accounts/how-to-forward-gmail-to-another-gmail/
If you reply to any of the forwarded emails from the new account then the reply originates from that new account.
(You have to watch that if forwarding to a non-gmail address that you might not want to be seen).
Of course you still need to go to the original gmail to clear it out now and again or you'll run out of storage space on it.
That should give you time to gradually change contacts, and other things, over to the new address, once they are all changed over you can forget the old one.
It's not going to be easy but it can be done with a bit of work.
For a while you will have some apps on the old account and some on the new as you change them over, and that can get confusing remembering which is which.
Why do you think google ties everything in together?
It not for your ease of use like they tell you, it's mainly for data collection and profiling of what you do online, but it also makes it more difficult to leave a google account behind.