Lots of questions here. 1. You can download all your posts and then re-post them from your new account if you want. Otherwise they will remain cached on instanc

Lots of questions here. 1. You can download all your posts and then re-post them from your new account if you want. Otherwise they will remain cached on instances. 2. If your instance is excessively blocked by other instances, that could be nudge to move your account to an instance that is better managed. 3. Instance admins usually give plenty of notice before shutting down which gives you time to move. 4. You can create as many accounts you want and on different instances. I have three: a real name personal one for friends and family, a professional one, and an anonymous political based one. I also run my own instance.