ERR_CONNECTION_REFUSED: Cannot enter the router's configurations

I cannot enter the admin menu at all, independent of whether I do it through Wi-Fi, wired connection, browser, mobile or computer. I have been having issues with the ports of my router-- they are closed, and that has been strongly troubling for me under the context I am in, which requires torrenting. In order to port forward, I have to enter the configurations-- which I'm unable due to this stumper.

I have been following this post and the responses to it,to no avail. Something I found remarkable was that not even my computer seems to recognize my router as a device. https://superuser.com/questions/1176361/unable-to-access-routers-configuration-page-192-168-1-1

I'm in urgent need for help, as I frankly can't even imagine the reason behind this or how to reach a resolution. I can contextualize my ISP is infamous for its poor quality service and functioning, and that this problem still happens in different locations with the same ISP. Any suggestion is worthy of gratitude for me.