I know people find games via other methods, but I never use Steams recommendation system. It has always been extremely awful, even the search results. Everything is done via generic tags and not an actual human who has any knowledge of a game genre and what game qualifies for it.
For example I just typed in "flight sim" in the search results. The first results are city builders, an anime girl thing, some extremely amateur flight games, space RPGs. Out of the first 20 search results I see two actual flight simulators. Page two is more of the same. The first page does have two popular flight sims (FSX and Rise of Flight) but you have to go a few pages in to find anything related to DCS and IL-2, which are probably the most popular flight sims in terms of current day sales. The fact anime games get priority over those two is absolutely absurd.
I never find games on Steam, it is always via a website like this, friends or some game news source.