Slow internet after setting up VPS

Yesterday I set up my first proxy using VPS and squid proxy. I configured it to use username and password and it all works great. However, my own connection is now slower than the proxy. Everything loads instantly with my proxy, but with my own connection things are loading pretty slow in comparison. Some things don't load at all. This is the guide I followed: https://www.digitalocean.com/community/tutorials/how-to-set-up-squid-proxy-on-ubuntu-20-04
Issue happens with every device so it's related to the network. How can I solve this?

For anyone who needs it: Yesterday I tried reinstalling the server, switching ssh keys, reinstalling squid and setting up proxy over and over, disconnecting modem and resetting network, chaning dns, flushing dns.. all of the basic stuff except for resetting the vps. A simple server restart solved it

sounds like what i use on my UK ps5 to watch USA tv
usa proxy / 2 x dns /