I am experiencing another problem with my obby leaderstats?

I'm trying to make an obby but I am not grasping how to change one player's leaderstats value without changing others. This is my code:

local DataStore2 = require(1936396537)
local defaultValue = 1


script.Parent.Touched:Connect(function(hit)

        if hit.Parent:FindFirstChild("Humanoid")then
            local char = hit.Parent
            local player = game.Players:GetPlayerFromCharacter(char)
            if char == player.Character then
                local stage = player.leaderstats.Stage
                if stage.Value == script.Parent.Name - 1 then

                    stage.Value = script.Parent.Name
                    local stageDataStore = DataStore2("Stage",player)
                    stageDataStore:Increment(1,defaultValue)
                    
                end
            end
        end
    end)

There is no error, however, it is changing every player's stage instead of just the one who touched the spawn at the next stage.

(This is how I set up DataStore2:)

	local stageDataStore = DataStore2("Stage", player)
	local leaderstats = Instance.new("Folder", player)
	leaderstats.Name = "leaderstats"
	
	Stage = Instance.new("IntValue", leaderstats)
	Stage.Name = "Stage"
	Stage.Value = defaultValue
	local function stageUpdate(updatedValue)
		Stage.Value = stageDataStore:Get(updatedValue)

	end
	stageUpdate(defaultValue)

defaultValue is equal to 1, btw, and this is all set up once a player joins.