Hi there @GrumS, I'd be happy to help!
To delete a Dropbox account, you'll have to first cancel the subscription and then delete the team.
Once you do that, your account will downgrad to a Basic (free) plan, so you won't have to recreate it if you want to simply make it a personal one.
Out of curiosity, could you let me know what your Plan tab shows at this moment?
Thanks!