I have a Belkin N300 router and have checked my cables.
I do not know much about routers but after my ISP Comcast did much work on my end because we had a phone issue, I find I lose internet about every other day, or so.
I have my router set to WPA-2 and have a little knowledge of its settings.
I could, for example change the channel.
If you were a relative novice with routers what are some steps you would take to find the problem.

They have told me they have checked my modem after the phone issue and it is ok.

Should I remove the router or should I change the channel?
I live in a retirement townhouse so maybe someone else is on my channel, or something.
Thank you