.If you deactivate/delete your Tw*tter account, your @ handle will be publicly available in 30 days. The chances that you will be impersonated with no recourse is very high! Don’t do it - especially if you had a fairly popular account.
To wipe things, deactivate your account, then go to bird site /login and reactivate it. All of your followers will be gone. Now lock the account and let it rot. @semiphemeral is a great tool for wiping data, including DMs.
Glen Mastodon ☠