What worked for me, temporary solution i guess, is disabling Experimental QUIC protocol. Did a little digging and found this workaround on Google. You can find it here, opera://flags/#enable-quic
Not sure why this QUIC protocol is causing some issues loading websites for me but if it's disabled, everything is working normally.
"QUIC is generally seen as a positive technology, offering potential performance improvements over TCP-based connections by reducing latency and improving overall network efficiency. However, its adoption is still ongoing, and some older or less well-optimized websites may not fully utilize its potential."
"Disabling the QUIC protocol in a web browser like Chrome will cause the browser to revert to using traditional TCP-based HTTP/2 or HTTP/3 connections for web traffic. While there might be a minor performance impact on some websites, disabling QUIC generally won't cause any major issues for the average user."