Block internet connection from a specific router

I want to find a solution to this problem that I am having. I desperately want to block my internet access while I'm home. I've concluded that I actually am desperately addicted to social medias, and the huge variety of entertainment content that is out there on the internet.

I've tried using web filters, but as I'm quite good with computers, so I always find ways to override the filters.

I've decided, therefore to only use internet at my library when I need to do work. Is there a way of completely blocking internet access from a certain WIFI router? (windows 10 operating system.. prepared to downgrade if needed) As I want to be able to access the WIFI in at my library.

I currently live with housemates, so I don't have a choice of getting rid of the internet connection.

I think I can block the MAC address of my laptop by accessing my router's settings. However, I know too well that I can change my mac address easily… Or maybe I should just get rid of my laptop and only do work in the library? This can be quite inconvenient as I would always have to walk to library to do work, where as I would love to do some offline work in the comfort of my room