While browsing the Internet, my preferred method is to use Address Bar Search keywords to find stuff quickly. Search Keywords allow user to do so without effort. for Example, set keyword 'm' as keyword for YouTube Music. So when you want to look up a song, just type "m Classical", which will search for Classical music on YouTube music.
However, Opera GX is the only browser using the Chromium Platform which locks the ability to change keywords for built-in search engines. So instead of 'y' searching on Youtube, it will look up Yahoo. I have been using Opera GX for about 3 weeks and this stupid decision bugs me everyday.