Hitbox is not consistent enough?

so my hitboxes sometimes works and sometimes dosnt im also using getpartsinpart on the client.

client

UserInputService.InputBegan:Connect(function(input)
    if Equipped == true then
        if input.UserInputType == Enum.UserInputType.MouseButton1 then
            if AnimPlaying == false and HitOrder < 5 then
                local HitboxCoroutine = coroutine.wrap(function(Character)
                    wait(0.06)
                    local Clone = Hitbox:Clone()
                    local Weld = Instance.new("WeldConstraint")
                    local TouchingParts = workspace:GetPartsInPart(Clone)

                    for i,v in pairs(TouchingParts) do
                        if v:IsA("Part") then
                            if v.Parent.Name ~= player.Name and v.Name == "Hitbox" then
                                print(v)
                                CombatM1:FireServer(HitOrder,v)
                            end
                        end
                    end

                    Clone.CFrame = Character.HumanoidRootPart.CFrame * CFrame.new(0,0,-1.5)
                    Weld.Part0 = player.Character.HumanoidRootPart
                    Weld.Part1 = Clone

                    Clone.Parent = player.Character
                    Weld.Parent = Clone
                    wait(0.05)
                    Clone:Destroy()
                end)

                HitOrder += 1
                local CurrentAnim = AnimTracks["Hit" .. HitOrder]

                HitboxCoroutine(Character)
                CombatTimer:Reset()
                CombatTimer:Start()
                AnimPlaying = true
                CurrentAnim:Play(0.1,1,1.1)
                Swing:Play()

                CurrentAnim.Stopped:Wait(0.4)
                AnimPlaying = false

                if HitOrder >= 5 then
                    wait(1.3)
                    CombatTimer:Reset()
                    HitOrder = 0
                end

                CombatTimer.Completed:Connect(function(count)
                    CombatTimer:Reset()
                    HitOrder = 0
                end)
            end
        end
    end
end)

server

CombatM1.OnServerEvent:Connect(function(player,HitOrder,Target) -- target = humanoidrootpart
    local DotProduct = player.Character.HumanoidRootPart.CFrame.LookVector:Dot((Target.Position - player.Character.HumanoidRootPart.Position).Unit)
    local Distance = (player.Character.HumanoidRootPart.Position - Target.Position).Magnitude
    local Damage = player.PlayerStats.Damage

    local RandomNumber = math.random(1,3)
    local OnHitAnimTrack = Target.Parent.Humanoid:LoadAnimation(OnHitAnims[RandomNumber])

    if DotProduct > 0.2 then
        if Distance <= 4.5 then     
            local KnockBack = Instance.new("BodyVelocity")
            KnockBack.MaxForce = Vector3.new(500000,500000,500000)
            Target.Parent.Humanoid.Health -= Damage.Value

            OnHitEvent:FireClient(player)
            OnHitAnimTrack:Play()

            if HitOrder < 5 then
                KnockBack.Parent = Target
                KnockBack.Velocity = player.Character.HumanoidRootPart.CFrame.LookVector * Vector3.new(0,0,10)
                wait(0.15)
                KnockBack:Destroy()
            elseif HitOrder >= 5 then
                KnockBack.Parent = Target
                KnockBack.Velocity = player.Character.HumanoidRootPart.CFrame.LookVector * Vector3.new(0,0,50)
                wait(0.3)
                KnockBack:Destroy()
            end

        end
    end

end)

https://gyazo.com/2ea63de4937053919120e0c5d7696c43