Many amateur players place pieces on bad squares and this disturbs the coordination of other pieces.
In the following game awkward chess piece moves contribute to the lack of coordination among the white pieces. You will see that this leads to reduced center control and lack of development. Black assembles more forces in the center and kingside and finally starts a strong kingside attack that destroys the king's pawn protection.
Black moves in the position below. Should he trade queens or let his queen just sitting there? Should he retreat with the queen?
Understand that Black has more chess pieces working in the center towards the attack against the white king compared to the number of active defending pieces of White. White is underdeveloped. Replay the game below.