Challenge for the amateur and expert coder! Help me solve the mystery **

I need help figuring out how to find the person or computer that is surveillancing my phone through either my router with WiFi password or Google and chrome? Or maybe through an app. I know it’s happening, but I cant quite get there. I’ve switched devices, and still nothing helps. I am ready to pay for a security service but not sure which one I need to go with here. Can someone please help me figure this out I feel like I am going crazy, and need to focus on other important things and people. My life depends on it. Will accept private PMs but fair warning, my device IS being remotely viewed

I need help figuring out how to find the person or computer that is surveillancing my phone through either my router with WiFi password or Google and chrome?
Factory resett Your device(s) and change password(s)