Exposed cables, slow internet. How to get the wires protected from elements?

Event log:

The upstream power is too high and it may be intermittently fluctuating even higher to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

Also, via comcast, tech visit is not possible due to covid?  Only a virtual call which I've scheduled for next week.  Which means I have no choice but to go into the office to work, in spite of Covid quarantine instructions.

Are there private contractors that can be hired to take a look at this stuff, or am I stuck with comcat technical support?

No visible splitters, the wiring is behind the walls.  I've removed/replaced all visible inside wiring already, I only use the one connection to the cable modem as we only have internet service, no tv.  I really have no idea about the wiring situation outside my building as there are multiple wires going into the varous units.  The labelling on the wires has worn off due to weather exposure and I don't know which is mine (see pictures from original post).

You could get an electrician to look at your premises wiring / hardware but they would not be allowed or able to touch anything on the Comcast side of the demarcation point / Comcast property. Nor would they have the training to trouble shoot the cable system, Good luck  !