How can I change the team of all the players in the server?

So in this script, what I'm trying to do is have all the players in the game go on the team "Players" as Intermission ends.

local roundLength = 180
local intermissionLength = 5
local InRound = game.ReplicatedStorage.InRound
local Status = game.ReplicatedStorage.Status
local Players = game:GetService("Players")
local Teams = game:GetService("Teams")
local teamPlaying = Teams.Playing
local teamSpectators = Teams.Spectating


local LobbySpawn = game.Workspace.LobbySpawn
local GameAreaSpawn = game.Workspace.GameAreaSpawn
local Part = workspace.LobbyFloor

InRound.Changed:Connect(function()
	wait(1)
	if InRound.Value == true then
		Part.CanCollide = false

		wait(2)
		Part.CanCollide = true
		
	else
		for _, player in pairs(game.Players:GetChildren()) do
			
			local char = player.Character
			char.HumanoidRootPart.CFrame = LobbySpawn.CFrame
		end
	end
end)



local function roundTimer()
	while wait() do
		for i = intermissionLength, 1, -1 do
			InRound.Value = false
			wait(1)
			Status.Value = "Intermission: ".. i .." seconds left!"
		end
		for i = roundLength, 1, -1 do
			InRound.Value = true
			wait(1)
			Status.Value = "Game: ".. i .." seconds left!"
			local function onPlayerDied(player, character)
				-- When someone dies, put them on the spectator team
				player.Team = teamSpectators
			end
		end
	end
end

spawn (roundTimer)

I attempted to try and put code on line 19 stating player.Team = teamPlaying but that did not work. To make the script work, the script above needs to be placed in ServerScriptService and a script called LocalScript that's in Starter Gui under a ScreenGui named Timer and beside text that's named TimerDisplay. Also need an int value called InRound in ReplicatedStorage and a String value named Status. The following is localscript

local Status = game.ReplicatedStorage.Status
local TimerDisplay = script.Parent.TimerDisplay

Status.Changed:Connect(function()
	TimerDisplay.Text = Status.Value
end)