Carrousel7956 threat model to me is hard for a lot to accurately be identified in my honest opinion. The typical question is -- whose after you? I think its a very hard thing to say. Because you rarely know if you're being targeted until it happens. Furthermore if you make someone mad, you really can't account for that persons involvement or skills. I can think of what I suspect is likely from a few different elements considered. Although, I don't know who the culprits are unless someone ultimately comes out and tells me to my face.
Mine ranges from Medium tier (higher end of good cyber criminals whether it be one or a small group) to High tier. I can't claim law enforcement, necessarily. But the suspicions are where they need to be. And basically speaking, to make it simplified without sounding like a complete dutz, I'm only looking into a full device takeover. Websites appearing legitimate but when you talk to the chat rep its someone with malicious intent.
Furthermore calls appearing as the right number but routing to a bad guy with a voicechanger of sorts. Having a finicky issue where one backspace on my pixel deletes an entire essay of writing, and relocated the blinking dash that awaits writing. I think I ran into an issue with messenger where only certain messages were getting through but others were blocked from both sides despite allowing through privacy settings.
Every odd error and connectivity issue added to what I listed here, I had to do a factory reset. Woke up today and my phone app is mostly pink. I'll look into your guide as its of the kind I was looking for, but if there's anything specific you'd like to tell me or additional direction for what I've mentioned I'd appreciate that, also. Have a good day.