Melee atack for weapons

For example, there are 4 weapons, but only one of them have a melee ability.
Weapons with a flashlight are unfairly deprived of the ability to push opponents away from themselves
Also, a shotgun, with the ability to charge a special charge, is deprived of the ability to hit the enemy with a butt

It was the same way in Vermintide 2. Only some ranged weapons had a bash or melee defensive option. Otherwise you dodge and shoot, or take out your melee weapon.