If you used the Desktop CD/Download program last year the only copy is on the computer you used and any backups you made. Like you said it's in One Drive. Turbo Tax doesn't have a copy of your .tax2021 file. Why can't you get it off One Drive?
If you used the Online web version you can transfer by logging into the same account. It's common to end up with multiple accounts. First LOG OUT of whatever TurboTax account you're logged into right now. Then use this TurboTax account recovery website to get a list of user ID's for an email address. Run the tool against any email addresses you may have used
https://myturbotax.intuit.com/account-recovery/
