Try putting the games you like in collections, those show up in searches and probably help more to make games visible.

I think it's asking too much to increase the visibility of a game with a single star rating. What you are doing, however, is giving the devs of a game you enjoy a reward for having put their time and effort into it, which is something we all appreciate, especially when we're starting out, and I wish more people would take the time to rate games, and leave helpful feedback :)