Lost a game, and I don't know why. Any advice on my moves?


Knights Before Bishops isn't a real rule, There are some openings where they play bishops first, it's not that bad.

Watch closely, I think this is called scholar mate. The queen is checking the king, the king CANNOT move to either side and is also not able to eat the queen because the queen is protected by WC3 Bishop.

Knights Before Bishops isn't a real rule, There are some openings where they play bishops first, it's not that bad.
Yes, but typically knights before bishops

Okay firstly f6 was not at all a good move as it was opening the weak f7 diagonal secondly u should have played g6 instead of nf7

Sorry, but can you tell something again on my game with "Chernushyn1968". That game I lost, please "LieutenantFrankColumbo" can you tell something about it.
I have looked at that game.
You are still extremely weak tactically, and you do have to work on it.
All other kind of chess study is completely unimportant if your tactical skill is so poor.
Suggestion? Start doing tactical puzzles, a lot of them. You can find more than ample quantity at various places on the web.