Random disconnects, packet loss, fluctuating power levels

I've been having this issue for awhile now, but it started back up again about a month ago.

I'm getting slow speeds, packet loss, and random disconnects. When trying to contact Cox support, they reset my modem.
Then when the reset modem didn't work, they just told me to get a new modem. I told them I went through this multiple times with Cox and it's not the modem. I've tried new modems and I have the same problem. They then told me that my modems "wi-fi port setting" was the issue and closed the chat immediately after.

My modem is not a 2 in 1, it's not capable of wi-fi and there's no such thing as a "wi-fi port setting".

I'm guessing there's noise being injected into the line somehow. It's happened in my neighborhood before and it took them MONTHS to actually escalate my issue to a higher tier tech.

There's no wall plate. My modem has a reducer on it (not sure what strength, installed by tech). It goes straight to the dropline. The issue is intermittent.

Modem: Netgear CM1000 (DOCSIS 3.1)

Here are my modems levels:

Here are the error messages which started to appear last month:

Edit 7/9/2019

Cox Technician is coming out Saturday morning to check things out AGAIN and most likely escalate the ticket.
Here are my new modem levels and packet loss test when things are acting up.

World of Warcraft (US-WEST)