knockback only working for a split second?

Hi, so i asked a question similar to this about knockback not working before for a tool i was making, but the thing is that now it seems to sort of have the chance to do it only for a split second, and doesnt give the player a chance to actually hit the other person, I've been trying all kinds of things but they just wont work. Help would be appreciated!

heres the script in serverscript service that gets activated from a tool when they press e

game.ReplicatedStorage.Bat.OnServerEvent:Connect(function(player)
    local debounce = false
    local char = player.Character or player.CharacterAdded:Wait()
    local tool = char:FindFirstChild("Bat")
    local bat = tool

    --[[local SlashInstanceValue = Instance.new("StringValue")
    SlashInstanceValue.Name = "toolanim"
    SlashInstanceValue.Value = "Slash"
    SlashInstanceValue.Parent = tool--]]

    local RegionPos1 = bat.Handle.hitbox.Position - (bat.Handle.hitbox.Size / 2)
    local RegionPos2 = bat.Handle.hitbox.Position + (bat.Handle.hitbox.Size / 2)
    local HitboxRegion = Region3.new(RegionPos1, RegionPos2)

    task.wait(1)

    bat.Handle.SWING:Play()

    local BodyPartsInRegion = workspace:FindPartsInRegion3(HitboxRegion, nil, 1000)



    for index, hit in pairs(BodyPartsInRegion) do
        local HitCharacter = hit.Parent
        local HitHumanoid = HitCharacter:FindFirstChildOfClass("Humanoid")
        local HitTorso = HitCharacter:FindFirstChild("HumanoidRootPart")
        local HitHead = HitCharacter:FindFirstChild("Head")
        local HitPlayer = game:GetService("Players"):GetPlayerFromCharacter(HitCharacter)

        local damage = 20

        wait(0.5)

        if (HitCharacter ~= nil) and (HitHumanoid ~= nil) and (HitTorso ~= nil) and (HitHead ~= nil) then

            if HitCharacter.Name ~= player.Name then

                if debounce == false then
                    debounce = true
                    bat.Handle.BIGHIT:Play()
                    game.ReplicatedStorage.Boom:FireAllClients()
                    local boom1 = bat.Handle.hit1:Clone()
                    local boom2 = bat.Handle.hit2:Clone()
                    boom1.Parent = HitTorso
                    boom2.Parent = HitTorso
                    boom1.Enabled = true
                    boom2.Enabled = true
                    HitHumanoid.Jump = true
                    HitTorso.Velocity = (player.Character or player.CharacterAdded:Wait()):FindFirstChild("HumanoidRootPart").CFrame.LookVector * 200 + Vector3.new(0, 30, 0)
                    wait(0.4)
                    boom1.Enabled = false
                    boom2.Enabled = false
                    game.Debris:AddItem(boom1, 1)
                    game.Debris:AddItem(boom2, 1)



                    HitHumanoid:TakeDamage(damage)

                    local CreatorTag = Instance.new("ObjectValue")
                    CreatorTag.Name = "creator"
                    CreatorTag.Value = player   
                    CreatorTag.Parent = HitHumanoid
                        game.Debris:AddItem(CreatorTag, 3)
                        end
                end
            end
        end
    end)