The damage output on the script is not working, does anyone have any ideas?

For a while I have been messing around and tweaking this script, and I've even looked at other people's scripts to see if they are doing something that I'm missing, but I just can't seem to find anything. On top of that, I don't receive any errors, so I'm not sure what's going wrong with it.

UserInputService = game:GetService("UserInputService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local CombatSystem = ("DamageModule")
local plr = game.Players.LocalPlayer
local char = plr.Character
local humanoid = game:FindFirstChild("HumanoidRootPart", true)
local module = require(script.Parent.DamageModule)
local Debounce = true

Key = "H"
Key2 = "J"
Key3 = "K"
Key4 = "L"
local SwingCount = 0
local SwingCount2 = 0

-- Light attack sequence (Measures magnitude between Attacker's body part(s) and HumanoidRootPart of other player)
script.DamageEvent.OnServerEvent:connect(function()
    UserInputService.InputBegan:Connect(function(Input, IsTyping)
    if IsTyping then return end

    if Input.KeyCode == Enum.KeyCode[Key] and Debounce then
        SwingCount = SwingCount + 1
        if SwingCount == 1 then
            local touched = char.LeftHand.touched:Connect(function(tap)
                if tap.Parent:FindFirstChild("HumanoidRootPart") and tap.Parent ~= char.Name and not tap.Parent:FindFirstChild("HumanoidRootPart") then
                    if (char.RightHand.Position - tap.Parent.HumanoidRootPart.Position).magnitude <= 6 then
                        tap.Parent.humanoid:TakeDamage(3)
                    elseif SwingCount == 2 then
                        local touched = char.RightHand.touched:Connect(function(tap)
                            if tap.Parent:FindFirstChild("HumanoidRootPart") and tap.Parent ~= char.Name and not tap.Parent:FindFirstChild("HumanoidRootPart") then
                                if (char.HumanoidRootPart.Position - tap.Parent.HumanoidRootPart.Position).magnitude <= 6 then
                                    tap.Parent.humanoid:TakeDamage(3)
                                elseif SwingCount == 3 then
                                    local touched = char.LeftHand.touched:Connect(function(tap)
                                        if tap.Parent:FindFirstChild("HumanoidRootPart") and tap.Parent ~= char.Name and not tap.Parent:FindFirstChild("HumanoidRootPart") then
                                            if (char.HumanoidRootPart.Position - tap.Parent.HumanoidRootPart.Position).magnitude <= 6 then
                                                tap.Parent.humanoid:TakeDamage(3)
                                            elseif SwingCount == 4 then
                                                local touched = char.LeftHand.touched:Connect(function(tap)
                                                    if tap.Parent:FindFirstChild("HumanoidRootPart") and tap.Parent ~= char.Name and not tap.Parent:FindFirstChild("HumanoidRootPart") then
                                                        if (char.HumanoidRootPart.Position - tap.Parent.HumanoidRootPart.Position).magnitude <= 6 then
                                                            tap.Parent.humanoid:TakeDamage(5)
                                                        end
                                                    end
                                                end)
                                            end
                                        end
                                    end)
                                end
                            end
                        end)

                    end
                end
            end)
        end

    end
end)