Secure Device Mirroring Setup & Docking

I need assistance with STOPPING THE phone mirroring, docking, and securing my devices to prevent cyber stalking. I currently have up to minimum 10 using screen overlays (where ph glitches for a micro second or it asks me several times the same thing like type your password in or like it did today - I was entering tax file and bank information on Facebook through a verified Meta area and I believe it was accessed. I do not want to be taken advantage of with high prices because I am a student and I work part-time and I have been struggling. I even spelt my name wrong I have been shaking so much. I am alone, single, embarassed and I need kindness more than anything to want to help me please and for me to be able to promote you, your work and or business once this is all completed.

Requirements:
- To disconnect smartphones from their mirroring/docking
- Ensure secure connections, both wired and wireless etc are going to leave me alone and I need it to be where my iphone is not discovered to other bluetooth or wifi users.
- I have a learning disability so I NEED help please.

Ideal Skills and Experience:
- Experience with device mirroring and docking
- Strong knowledge of network security
- Ability to set up secure wired and wireless connections

Please provide a detailed plan on how you will accomplish this task, including any tools or software you will use.