@leocg Now I have a new problem. I installed an extension called Dark Mode-Dark Reading from chrome extension store. It is working properly but opera detected some malware and disabled it. I cannot enable it no matter what I do. This kind of issue already happened with opera with some tapermonkey( I don't know exactly). Give me a solution to this problem.
2. Flow is not working. I have tried all opera browsers but no use

I do have the same problem with the opera Gx. No matter what I try I cannot install chrome extensions. Normal Opera browser is working fine with no issues but Opera Gx is faster compared to Opera. I prefer opera gx but no extensions. So, I'm forced to use Opera which is a bit slower.