How would I fix this? A team randomizer script not putting people in their specific teams

I am trying to make a script for a round based game where two people get picked to become Presidential nominees and debate, this is the script that chooses the to players and puts them on the two different teams (Democrat and Republican) but it stops working midway through the '_G.Teams' function.

local Teams = game:GetService("Teams")
local blueParty = Teams["Democratic Party"]
local redParty = Teams["Republican Party"]
local playersOnRedTeam = game:GetService("Teams")["Republican Party"]:GetPlayers()
local playersOnBlueTeam = game:GetService("Teams")["Democratic Party"]:GetPlayers()

local function selectPlayer()
    local players = game.Players:GetPlayers()
    local selected = players[math.random(1,#players)]
    return selected
end

_G.Teams = function()
    local randomPlayer = selectPlayer()
    local selectedTeam = math.random(1,2)
    if randomPlayer and randomPlayer.Character then
        if randomPlayer.Team == redParty then
            print("We can't pick this player!")
            wait()
            selectPlayer()
            wait()
            _G.Teams()
        elseif randomPlayer.Team == blueParty then
            print("We can't pick this player!")
            wait()
            selectPlayer()
            wait()
            _G.Teams()
        else
            if selectedTeam == 1 then
                if #playersOnRedTeam >= 1 then
                    randomPlayer.Team = blueParty
                else
                    randomPlayer.Team = redParty
                end
            end
        end
    end
end