bluetooth plist

My ex girlfriend hired a hacker to do something to my computer or network or files, I’m not sure what exactly happened but I caught her “friend” syncing my files after we broke up and while she was still living at my place. The hacker created a shadow guest network user on my computer and turned on do not disturb for notifications. He bypassed my 2fa using an old computer, it was locked but she watch figured out the password and I was logged in to iCloud so she or the hacker had access to my stuff for at least a few days before I accidentally figured it out what was going on. All of the emails I’m supposed to get notifying me of logins to various accounts were immediately trashed, my phone was also hacked and the mail settings were changed on my iPhone so notifications were off. All of my accounts and devices seemed to be accessed so I replaced everything: phone, computer, chargers, network, modem router etc, changed all of my passwords, got new email /iCloud/bank accounts- everything. I set up the new computer after the new network was in place to prevent cross contamination. I have the paid version of lastpass and I only recently started using the browser and autofill extension, i use malwarebytes as well. I ran être check but don’t understand the results. My new phone was hacked again about a month after the initial hack, which happened 4 months ago. I’ve noticed a bunch of weird stuff lately and this evening I found the attached picture. I’ve never used Bluetooth on the new computer, I have all the boxes unticked, my firewall is in stealth mode and blocks all incoming connections although for a while this would always revert from the yellow light back to the green light but then it stopped and now it stays in the yellow light, thus blocking all incoming connections. I think there is something in my iCloud or Dropbox files that is allowing someone to access my computer but I don’t know what. The new computer settings were also changed - everything was checked in the accessibility pane to allow users to connect and control my computer. Can someone please tell me if I am overreacting or is this Bluetooth plist file normal? I don’t use Siri on my iphone or MacBook and I have never connected my phone or a speaker to the computer using Bluetooth. And then I also found that there was a recent keyboard selected for the keyboard panel in the accessibility part of settings.

Has another device connected to my new computer and why does it say “_PrefKeyLoggingEnabled_” in the second line of the text file.?

Why is there something listed under recent keyboards in the panel editor keyboard pane?

I am running the latest version (I have automatic updates turned on for all my devices and updated it yesterday on my MacBook Air 13”.