Why I can't play the game with good experience

You're putting a lot of disparate things in one post, but concerning the lobbies and the players levels, I think it's just an issue that this game is not attracting a lot of new players, so not many sub-level 20 people available.

Of note though, the level does not indicate someone is good. Sure, they may have played it a lot, but you get points for pretty much anything in this game, so you can be level 300+ and not be very good.  Like, say, me for example.