I am at university and the internet here is routed through a proxy server. That's why voobly is unable to connect to the internet. How do I fix this?

PS:- I tried to use a VPN, but since I need to connect to the proxy server to use internet, it can be done through browser only, external applications can't seem to run. Also quite a few ports are blocked over my proxy. If someone knows a VPN that uses port no 8080, please let me know, that should work.

Thank You.