Shameless plug, you can use wstunnel which disguise your traffic as websocket to tunnel any traffic you want. I had most success with it, as it uses TCP, than with QUIC/HTTP3 as usually UDP is more heavily restricted.
It works behind GFW and let you use your wireguard for example...
I had also good feedback from people in Turkey and Iran
wstunnel: https://github.com/erebe/wstunnel