I want to make all players spawn with a model on their back?

the easiest way to go with this is a server script so everyone can see it, but since we cant find the local player with a server script we have to look through every model in workspace and see if the model has a humanoidrootpart and if it does, clone the part from the replicatedstorage and parent them onto the humanoidrootpart, so this would be the script

 local rp = game.ReplicatedStorage
    
    local Tank = rp:WaitForChild('Part','Part2','Part3')
   local weld1 = Instance.new("Weld")
   local weld2 = Instance.new("Weld")
   local weld3 = Instance.new("Weld")
    
    
    
        while true do--checks every 0.1 seconds
        wait0.1
        for i, v in pairs(workspace:GetChildren()) do --says v is all the children of workspace
        if v:FindFirstChild("HumanoidRootPart") then--sees is v (aka the child of workspace) has a humanoidrootpart inside of it
        local humanoid = v--u understand this i hope
        if not v.HumanoidRootPart:FindFirstChild("Tank") then--if it cant find Tank inside the humanoidrootpart then
        Tank:Clone().Parent = humanoid.HumanoidRootPart--this clones and gets the parent humanoidrootpart
        Tank.CFrame = CFrame.new(humanoid.HumanoidRootPart.Position)--sets the position of the Tank
        weld1.Parent = humanoid.HumanoidRootPart.Part
        weld1.Part1 = humanoid.HumanoidRootPart.Part
        weld1.part2 = humanoid.HumanoidRootPart.Part2
        weld2.Parent = humanoid.HumanoidRootPart.Part2
        weld2.Part1 = humanoid.HumanoidRootPart.Part2
        weld2.part2 = humanoid.HumanoidRootPart.Part
        weld3.Parent = humanoid.HumanoidRootPart.Part3
        weld3.Part1 = humanoid.HumanoidRootPart.Part3
        weld3.part2 = humanoid.HumanoidRootPart.Part2
        end
        end
        end
        end

i hope this will get u a little bit closer even if its not perfect with the position