Reload and Shooting on 2 different buttons is pointless

Requiring a separate shooting button is pointless tedium.

Switching to a different ammo, reloading it and then shooting should be just one button.

Little unclear here because that's already how it works.

If you're out of ammo, shooting reloads. Having the separate reload button allows you to reload before you've spent all of your ammo which is obviously important.

Are you talking about crossbow bolt swapping?

I can understand your point, but the thing you may be missing is that the crossbow shot and the bolt are both 'skills' and as such can both be supported by different support gems, altering the playstyle and damage output depending on what supports go on what ability.

the fact that i need 3 buttons to shoot 2 different ammo types makes no sense, im not talking about having to reload manually or getting rid of the shooting. Just make the Ammo button also shoot.

If the ammo button shoots, then you can't reload without emptying the magazine.

You can easily hide ammo buttons in the Ctrl modifier slots if you don't press them much and want more room. I wouldn't want to shoot the ammo on different buttons either.