How do you get the text to switch back to buy if the tool is not bought?

Ok, so the so it does only allow you to buy the tool once the it says "bought". But then you go to another tool it still says "bought" and not "buy" and you're not able to buy it. So how do I make it to where it says buy for tools that aren't bought. Here the button script.

local price = script.Parent.Parent.Price

local tools = game.ReplicatedStorage:WaitForChild("Tools")

local tool = script.Parent.Parent.ItemName

local player = script.Parent.Parent.Parent.Parent.Parent.Parent

local db = false

script.Parent.MouseButton1Click:connect(function()

if db == false then

if player.leaderstats:FindFirstChild("Money").Value >= price.Value then

player.leaderstats:FindFirstChild("Money").Value = player.leaderstats:FindFirstChild("Money").Value - price.Value

game.ReplicatedStorage.ShopBuy:FireServer(tool.Value)

db = true

script.Parent.Text = "Bought"

elseif not (player.Backpack:FindFirstChild(tool.Value) or player.Character:FindFirstChild(tool.Value) or player.StarterGear:FindFirstChild(tool.Value)) then

script.Parent.Text = "Buy"

if player.leaderstats:FindFirstChild("Money").Value >= price.Value then

player.leaderstats:FindFirstChild("Money").Value = player.leaderstats:FindFirstChild("Money").Value - price.Value

game.ReplicatedStorage.ShopBuy:FireServer(tool.Value)

db = true

end

end

end

end)

I don't understand if you are trying to prompt a purchase or something, which I don't think you are due to you already taking the cash before they even get a prompt (The event might be prompting a purchase if I had to guess.) Regardless, the text should always stay as "Buy" unless the player has the tool or bought it already in which case it would always stay bought.

--assuming all of this is a localscript, which it should be.--
--If they don't have enough cash then this does absolutely nothing.--

--Basically checks if player has weapon. If they don't, it checks cash. If they don't have enough, it does nothing.
--If they already have the weapon, the text changes to bought. If they don't, then have enough cash, the text changes to bought.
	
repeat wait() until game.Players.LocalPlayer.Character ~= nil --not always needed but helps to ensure the script does not load before the player, if it does
--then it will not run properly
local price = script.Parent.Parent.Price
local tools = game.ReplicatedStorage:WaitForChild("Tools")
local tool = script.Parent.Parent.ItemName
local player = game.Players.LocalPlayer -- this is much more efficient and ensures you won't make a mistake

local db = false
script.Parent.MouseButton1Click:connect(function()
if db == false then
	
--it's probably a lot safer to check this first, in fact I don't know why you weren't since it seems you want to check if they have the tool or not
if (player.Backpack:FindFirstChild(tool.Value)) ~=nil then script.Parent.Text = "Bought" print('already has')--check if have tool

elseif (player.Backpack:FindFirstChild(tool.Value)) == nil and player.leaderstats:FindFirstChild("Money").Value >= price.Value then--check if money is enough
player.leaderstats:FindFirstChild("Money").Value = player.leaderstats:FindFirstChild("Money").Value - price.Value
game.ReplicatedStorage.ShopBuy:FireServer(tool.Value)
db = true
end
end
end)

EDIT:

I re-read that multiple buttons are saying 'Bought.' Did you check the name or value of the tool? If it's the same for all of them, then each button would read that you have the tool that button is supposed to be for.