How not to get frustrated?

If i play 3 games for example and lose them by having 1 or more obvious trolls in my team (0-10 score in first 8 min to those who ask stupid question ''what do you consider to be troll''),how can anyone hope to win in future games? Do i need to play 10+ games and hope that in enemy team there will be trolls? Is that the only way to actually win in this game? For now there is only 2 ways that one can actually win 1.In enemy team there are trolls 2.In enemy team someone afks There is no such a thing as ''close game'' that is a myth
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