[mothered]

Can you deactivate a paypal account or no?

I believe you can close them.

You certainly can close a PayPal account. The setting Is In fact In your Account Options, accordingly named "Close your account". This Is on the grounds that there are no unresolved Issues, nor any pending/outstanding funds.

Given It's Irreversible, be sure you're absolutely certain with your decision. In answer to the OP's concern and as already mentioned, start fresh with a new account.