How would I make this ray script mobile-friendly?

I have this script for wands, I'm trying to make it mobile-friendly but to no success, if anyone can help it would be greatly appreciated.

local tool = script.Parent
local UIS, Player, Camera = game:GetService("UserInputService"), game:GetService("Players").LocalPlayer, workspace.CurrentCamera
local MP, MD = nil, nil

function GetMousePoint(X, Y)
    local RayMag1 = Camera:ScreenPointToRay(X, Y) --Hence the var name, the magnitude of this is 1.
    local NewRay = Ray.new(RayMag1.Origin, RayMag1.Direction * 2500)
    local Target, Position = workspace:FindPartOnRayWithIgnoreList(NewRay, {Player.Character, workspace.FlyingSpells})
    return {Target, Position}
end

local downEvent = function()
    if MD == true then


        script.Parent.Comm:FireServer(true, MP[2], MP[1])
        wait(.25)
    end
end
UIS.InputBegan:Connect(function(input, pro)
    if pro or script.Parent.Parent ~= Player.Character then return end
    if input.UserInputType == Enum.UserInputType.Keyboard and input.KeyCode == Enum.KeyCode.Q then
                print("keyboard")

    elseif (input.UserInputType == Enum.UserInputType.MouseButton1 or input.UserInputType == Enum.UserInputType.Touch) and MP ~= nil then
        MD = true

        while MD do
            downEvent()
        end
    end
end)
UIS.InputChanged:Connect(function(input, pro)
    if input.UserInputType ~= Enum.UserInputType.MouseMovement then return end

    MP = GetMousePoint(input.Position.X, input.Position.Y)
end)
UIS.InputEnded:Connect(function(input, pro)
    if input.UserInputType ~= Enum.UserInputType.Keyboard then
        MP = GetMousePoint(input.Position.X, input.Position.Y)

        if (input.UserInputType == Enum.UserInputType.MouseButton1 or input.UserInputType == Enum.UserInputType.Touch) then
            MD = false
        end
    end
end)