If I understand this correctly, the Auditor is used to verify if the device has been tampered with since the initial audit. I don't think the raw data it provides is very useful to you.
It is very unlikely someone gained access to your phone via an exploit. Commercial tools fail to do so on latest Google Pixel and iPhone models, especially with GrapheneOS / lockdown mode for iOS.
To gain access to your device, an attacker needs physical access to your phone in unlocked state so they can install a malicious app with all permissions granted to exfiltrate data. Or they try to get you to install this app via social engineering. If this app existed on your phone, it would be listed as non-system app in the 'All Apps' settings menu. This list contains apps you (or the attacker) installed, default GrapheneOS apps and other pre installed software (SIM Toolkit, Wireless emergency alerts, Launcher, Keyboard, ...). In any case, disabling wifi and enabling airplane mode will prevent any app on your device from connecting to the internet. I also suggest using Signal (or WhatsApp if necessary) to call and message because of end to end encryption.
The issues you describe having on your computer do not indicate that your device is infected. In my hosts file are some comments with ip addresses, spikes in cpu usage are not unusual, my /bin folder contains some python scripts and live usbs can be difficult to use. All of this is normal.
If you are worried you can go overkill and switch to QubesOS.
I am really sorry you are going through this. The constant anxiety can be very harmful to your mental health. I think talking to a therapist can help you handle and resolve this phase in your life.