Fearful or unnatural moves don't help, but ruin your game...
Learn Chess Strategies and avoid moves that don't develop chess pieces, but are just nonsense moves based on fear of threats that are existing in your mind only and don't make sense at all. Don't make moves that just pop up in your mind and look good. Chess is not about looking good. Always obey the Laws of Chess and develop your pieces to natural squares where they control the center and castle on time.
In the next game you will see how white (beginner) just makes moves that look good, but are no good at all as they violate the principle of chess development. He neglects to castle and moves pawns at the queenside instead. Black makes proper moves and just runs him over in the center.