Do not mind those who play 3-5 matches and lose and then say the game is unstable. It is a difficult game, it teaches the person to be defeated. The tactic you make in one match won't work in the other; Because, your opponent, a momentary change of strategy will turn everything upside down.
Is this bad? On the contrary, it requires always being vigilant, establishing tactics from scratch according to the opponent and thinking fast in each new match. It is a difficult game but it is the only game you enjoy even being defeated :)
My advice is that players who say I'm ambitious should play, arrogant players who say I cannot lose should stay away. .