Admin blocking userscript engines. :(

Hey! So I need to install a userscript manager in order to install a script for an easter event in a game I like called torn city. My laptop isn't letting me download any because my admin has blocked them. I do not have access to any devices other than the laptop I am currently on, and I'm not very code-savvy. Is there any way to install a userscript manager even though my admin has blocked them?

Google chrome shows me this on every one of the userscript managers