All weapons are divided into different classes:
1. Assault rifles
2. Sniper rifles
3. Shotguns
4. Submachine guns

Sniper rifles are good at long range, assault rifles—at medium range, shotguns and submachine guns—at close range.
Within the class, weapons differ from each other in different parameters: damage, range, speed, accuracy, mag volume, and mobility.
Each weapon has its own unique user experience, so don't be afraid to try its new types. Maybe one of them will suit you best.