Like Karis said, you can download your data. Be aware that you might need to try more than once, though. It didn’t work for me the first time & I’ve heard that from others, too!
You can permanently delete your account if you’d like, and here’s the instructions (linked). I downloaded my data, deactivated, and then deleted—haven’t looked back!
Comments
https://help.x.com/en/managing-your-account/how-to-deactivate-x-account#how-to-deactivate