Does anyone know how to bypass a firewall for a chrome book?

I found this:

So I use my sister's chromebook a lot (mostly just for stuff like school or just to look up questions and whatnot) and she got it as a school chromebook and barely uses it (thus why i use it). But apparently the school blocks everything on here that I want to use. I tried looking for proxies or vpns and looking up and asking people for ways to bypass the firewall, and i also tried a tiny url website that shortens links because somone recommended it, but they don't work. I also tried to go to 192.168.1.1 but it sends me to a blocked page.networks/proxies. 3

It isn't my answer I just got it off of the internet. I hope that this helps.

the answer is (-4,-4)

hope this ! : d