why will this script only tp people to the second spot and it will only work in studio?

this script is supposed to teleport the players to different spots each time. the first time it teleports them all to the pods and the second time into the arena. however, it turns out it only tps them to the arena and goes over the pods. on top of that, it does not work in the real game, just studio. Any ideas why?

local parts = {}
	local parts2 = {}

	for _,part in pairs(game.Workspace.podss:GetChildren()) do
    	table.insert(parts,part)
	end

	for _,part in pairs(game.Workspace.pods:GetChildren()) do
    	table.insert(parts,part)
	end

	for _,plr in pairs(game.Players:GetPlayers()) do
    	local partchosen = parts[math.random(1,#parts)]
		local partchosen2 = parts2[math.random(1, #parts)]
    	plr.Character.HumanoidRootPart.CFrame = partchosen.CFrame
    	for i,part in pairs(parts) do
        	if part == partchosen then
            	table.remove(parts,i)
			end
		end
		wait(3)
		for i, part2 in pairs(parts2) do
			if part2 == partchosen2 then
				table.remove(parts, i)
			end
		end
	end