I have basically never used the site to try and navigate to find or discover new games.

About the only time I have used it was when a game was recommended by a third-party and it was only available here.

The independent game YouTuber, Splattercat, mentions similar complaints in his recent video about Corebreaker

I completely agree, it should be much easier to find games.

Better search functionality (whether search exclusions, expanded tag options, etc) have been asked on here multiple times just in the last month.  Hopefully it's being worked on, but as of now it's a bit of a mess.  

Depending on what's available, using 3rd party tools may be an option.  For example, since I got the Ukraine benefit bundle last year, I use Bundle Browser to find something I may be interested in from that