I want to make my left arm cancollide because if arm just gets it into the wall there will have chance to get bugs.

LArm = script.Parent.Parent:WaitForChild("Left Arm")
RArm = script.Parent.Parent:WaitForChild("Left Arm")  

attacking = false 
canattack = false 

script.Parent.RemoteEvent.OnServerEvent:connect(function(plr, AttackArm)
	canattack = true 
	attacking = AttackArm and "Left" or "left" 
	wait(0.6)
	attacking = false 
end)

function a(hit, arm)
	if canattack  and attacking == arm and hit.Parent:FindFirstChild("Humanoid") ~= nil then 
		canattack = false 
		script.pp:Play() 
		hit.Parent.Humanoid:TakeDamage(10) 
	end	
end

LArm.Touched:connect(function(hit)
	a(hit, "left")
end)
RArm.Touched:connect(function(hit)
	a(hit, "Left")
end)