how do you deal with too attacking players?

I started playing around 2 months ago and I notice that most games I lose is because I'm facing a too attacking player, for example, in a recent match a guy sacrificed his bishop in the 2 move, for no reason, then he tried to keep doing weird movings just because he was attacking the king, making my position worst, till he wins in a weird way. but he was not playing good, I'm sure that a player who can defend better would easily win the match. how to defend better?

I found that game, Sicilian Bowlder attack where you tried to Fianchetto your Bishop in the dragon style. You were actually doing quite well until you went on the attack with your bishops. Move 14 was when you lost the advantage, but move 13 gave a half open b file to white when the Bishop was attacked with temp. A retreat to g7 would have secured the Bishop. You developed slowly ignoring the threat of the other player. Then you had not built a foundation to attack or address what was being thrown at you before launching the bishops. Against the Bowlder attack e6 secures the f7 pawn. You were trying to play a hyper accelerated Dragon in the wrong line. Your next moves should have been to consider a6, b5 or d5 to push the Bishop back. But there is lots of theory in the Sicilian. For 2 weeks I think you are doing very well.