After not getting any response, I dont understand what how to solve it. Then I started searching on Google and came across this useful guide https://www.thewindowsclub.com/opera-browser-keeps-crashing-or-freezing. They have shown some important methods that helped to stop crashing and freezing.

First I updated the browser and most importantly I removed some unnecessary extensions which added there. Now I have no longer any issues while working on Opera.

Good morning friends, I have been encountering a serious problem on Opera for the last few days. Actually, the browser is crashing and freezing a lot. There was no other browsers open and I just work here opening a few tabs. Then I dont understand what could be the issue. Could anyone please help me to fix it? Any kind of help would be highly appreciated.