I have looked al over for an answer and it seems no one else has this problem, when i try to fire a gun in game using the left mouse i seem to flicker between aiming in and out abut not acually firing the gun. I have posted this somewhere else so as it is still relevant i copied it here.

attack is bound on both my keyboard and my mouse and i think this is causing conflict resulting in my not being able to fire the gun but only allowing my to aim down the sights, i don't know what to do next and i will leave a link to a YouTube video i made of me resetting the key bindings and if someone who knows what they are doing will look at the key bindings in the video and tell me what is wrong i would greatly appreciate it.
LINK: /watch?v=IFDvfG7gXcw