You aren’t following opening principles. First you play Nc6 (or d6) to defend the e5 pawn. Then if your opponent goes for Bc4 to threaten a cheapo checkmate on f7 THEN you play g6- attacking the queen, blocking the checkmate. If your opponent plays Qf3 to renew the checkmate threat, you simply play Nf6.
You always have to recognize what your opponents threats are before moving.
I learned in video https://www.chess.com/video/player/everything-you-need-to-know-2-the-opening that attacking with queen is bad early and tried attacking with quen and it ended up bad - various figures took my queen. But this guy made a checkmate without problems. How is that possible? I turned on 30 minutes game and got crushed in few minutes.
https://www.chess.com/analysis/game/live/18553861455?tab=analysis
Now rewatching - first mistake is probably to not defend the pawn - I did not notice that he is attacking Qxe5
But second - he took my tower Qxh8. I cannot see how to defend it when I needed to defend king and he become way ahead. Really if I had defended my pawn, probably would not have such situation in the first place.
I feel crushed. How can I even have level similar to him when he crashed me like a baby.