But about the WFi. It flickers based on what the code in the router section tells it to do. This is not standardized so the ISP or modem+router maker has to answer you as to the blinking.
Here I often recheck the area with my phone using a WiFi analyzer to see what other hotspots are in the area. We'll also change the router to WPA2 if not set to that and change the router's name to a new name plus change the passwords. WPA2 is not uncrackable but this usually gets anyone off the hotspot for a day.
I see you are on Ethernet so why nod disable WiFi in the router for now?
Also, turn the following off. Read https://www.howtogeek.com/224981/how-to-stop-windows-10-from-uploading-updates-to-other-pcs-over-the-internet/
This is what happens during the day, around 5-6 times. The issue is, the connection completely cuts off and comes back on later. This is through cable. The ISP technician did come by last week and fixed everything, but after 2 days, the same thing kept happening. And when this happens, the lights indicating the wifi signal keep flickering, which is very bizarre since I'm having these issues on cable. Any tips? I tried factory resetting my router and network settings on pc, none of it helped. Cheers