If you leave a game in the air, you can get a penalty. There are other reasons for finding a game in a long time. The match must be fair. I’m sure they’re working on this. It may be hard to find a player that suits your taste 🙂
Because this is a 5v5 online game versus real players, you might have to wait longer than usual for other players to join because there are not enough other players online at the moment. It may also be because you left a previous game early or went AFK, thereby incurring some penalty time.