Hairstyles depends on ones face shape, hair structure and texture. There are 10 basic face shapes and within these 10 face shapes there are various combinations. Many hair styles could be cool but not necessarily all will suit everyone.
You need to see which hairstyle goes with your face structure, the quality of your hair and which will you be able to carry with ease! For example I like crew cuts. They hold pride of place on the list of the most popular male haircuts. It is very versatile, being from textured and matte to slick and glossy. You can have your sides and back faded or undercut as well as accentuate your hairstyle with a surgical line. You can check examples here menshaircuts.com/crew-cut/