how do i make a tool permanent in inventory using scripts?

i made a shop where you buy a tool and it puts it in your backpack. i was making a script where if you die, none of your tools dissapear. i tried making a script where if you buy a tool, it goes in your starterpack. but that does not work. any help? script that puts tools in my backpack:

script.Parent.MouseButton1Click:connect(function()
local replicated = game:GetService("ReplicatedStorage")
local item = replicated:WaitForChild("Trophy")
local price = 1
local player = game.Players.LocalPlayer
local stats = player:WaitForChild("leaderstats")

if stats.Points.Value >= price then
stats.Points.Value = stats.Points.Value - price
local clone = item:Clone()
clone.Parent = player.Backpack
end
end)