Why does my tool.Activated only be activated when I hold not click?

I'm trying to make a time slower script but for some reason, I need to hold when using the tool even though I used tool.Activated and Deactivated. Here are the scripts.

Local Script

local tool = script.Parent

tool.Activated:Connect(function()
    game.ReplicatedStorage.TimeSlow:FireServer(true)
end)

tool.Deactivated:Connect(function()
    game.ReplicatedStorage.TimeSlow:FireServer(false)
end)

Server Script

game.ReplicatedStorage.TimeSlow.OnServerEvent:Connect(function(plr, bool)
    if bool == true then
        for i,v in pairs(game.Players:GetPlayers()) do
            script.Slowed:Clone().Parent = v.PlayerGui
            v.Character.Humanoid.WalkSpeed = 1
            workspace.Gravity = 50
        end
    elseif bool == false then
        for i,v in pairs(game.Players:GetPlayers()) do
            v.PlayerGui.Slowed:Destroy()
            v.Character.Humanoid.WalkSpeed = 16
            workspace.Gravity = 196.2
        end
    end
end)

There are no errors but I still need to hold instead of click.