My Data Save Doesn't Works, But API's Are Turned ON Help?

ok so i made an datastore service but it doesn't works how it is supposted to.

when i change the value in the console, it just saves it and loads after i rejoin, but when i will change the value with script, for example simple clicking script that adds + 1 to the value, it just doesn't saves value.

here is the video of what it is doing and what not -- https://youtu.be/ktCxZFdqTXk

HERE IS THE CLICK SCRIPT --:

script.Parent.MouseButton1Click:Connect(function(player)

local player = game.Players.LocalPlayer
local clicks = player:WaitForChild("leaderstats"):WaitForChild("clicks")

clicks.Value = clicks.Value +1

end)

HERE IS DATA SAVE SCRIPT--:

local ds = game:GetService("DataStoreService"):GetDataStore("SaveData")

game.Players.PlayerAdded:Connect(function(plr)

wait()
local plrkey = "id_"..plr.userId

local save1 = plr.leaderstats.clicks

local GetSaved = ds:GetAsync(plrkey)
if GetSaved then
    save1.Value = GetSaved[1]

else
    local NumberForSaving = {save1.Value}
    ds:GetAsync(plrkey, NumberForSaving)

end

end)

game.Players.PlayerRemoving:Connect(function(plr)

ds:SetAsync("id_"..plr.userId, {plr.leaderstats.clicks.Value})
print("saved?")

end)

AND FOR THE LAST SCRIPT HERE IS LEADERSTATS SCRIPT--:

game.Players.PlayerAdded:Connect(function(player)

local leaderstats = Instance.new("Folder")
leaderstats.Name = "leaderstats"
leaderstats.Parent = player

local clicks = Instance.new("IntValue")
clicks.Name = "clicks"
clicks.Parent = leaderstats
clicks.Value = 0

end)

i have no idea what i am doing wrong, beacause i am begginer and please help me fixing that.