There are people here but this is a user to user volunteer forum. People will answer if they have time and if they think they understand what you need and they know the solution(s). Your statement of the problems is somewhat nebulous so it was a bit like going to a doctor's office and say you are there because, "I am not feeling well." If you say, "I tripped and heard a bone break in my arm," the doctor will be able to present a much better diagnosis. Frankly I would hardly know where to start because you mention half a dozen issues and nothing you describe corresponds to any way I could make an account behave even if I tried. I am not saying it isn't happening, but doing things one day, then not another, then doing them again isn't something I have any idea how it could do that.
Read this document if you think your Apple ID has been compromised. --> If you think your Apple Account has been compromised - Apple Support
For iOS 15 or earlier, if you want to see if anyone else has access to your device or accounts, click here --> Limit access to your iPhone or iPad - Apple Support
For iOS 16 or later see how Safety Check on iPhone works to keep you safe. How Safety Check on iPhone works to keep you safe - Apple Support
Use the information in this document to check your Apple ID device list to find where you're signed in --> Check your Apple Account device list to find where you’re signed in - Apple Support
Related materials:
Personal Safety User Guide
Personal Safety User Guide - Apple Support
> open the Table of Contents and review the articles
A document with general information about security and your Apple ID --> Security and your Apple Account - Apple Support
Contact Apple for help with Apple ID account security. This page provides country-specific Apple Support contact information ➞ Contact Apple for support and service - Apple Support