I've ran to some kind of issue here. I noticed that for some reason i got rambler added to the search engine and it even set a search shortcut for it self. The funny thing is that it happened on a clean system where I started to use only licenced software thus I am confused and do not know where this malicious website popped up from.

Is there a way to remove the search engines that I do not need or I do not use?

Browser Opera GX, version 87.0.4390.58
Please see attached screenshot.