There are millions of people that are playing DOTA 2, there are winners, and there are losers. Of course, you want to be on the winning side. But you have to understand that you are not going to win every time. If you are playing the ranked game, then you should aim for the best and win every game, especially if you are playing solo, in the rank mode.
If you are a player of the online game, Counter-Strike, I know that you usually achieve different types of game modes and determine that none of these are working effectively. It is neither your goal nor your co-players, you tend to lose the game without knowing the reasons, and it gives you the feeling of suffocation.