@dreamboxjune wrote:
The group account is over it's limit for storage so now my personal account storage is affected.
How can I disconnect my personal account from the group?
Do you mean that you joined a shared folder which has put you over your quota? If so, you can leave the folder to remove it from your account.
If, instead, you mean that you've been invited to and joined a Business team, you'll need the team admin to convert your account back to an individual account.