The subject matter was so long that I could not determine the title. Please help me.
 

Hi guys, in Left 4 dead 2 when I start filling when I'm finished my ammo, at the same time, zombies are attacking me, and I can't escape to surround myself, so I can't fill my ammo when I'm fighting them back with the mouse's right button, because every time I press the right button, the re-filling animation starts. This is how I prevent, When I press the" R " button to start filling the Arsenal and continue even when I press the right button, but do not show the Arsenal filling animation, the right button when we press the animation, but still fill the Arsenal. Also how can we press the right button in an unlimited way? because a load bar is formed around the sight after repelling the zombies by pressing a few right buttons.