How do you detect if one player is on a team?

I know this is not a request site but I honestly have no clue. I have been trying to do this for the past 4 hours. I can't find anything on the internet that helped.

This is what I have so far:

Players = game:GetService("Players")
for i, player in pairs(Players:GetPlayers()) do
    -- This is where I'm stuck
end

Is this what you want?

local Team = Wherever the team is located
local player = Team:GetPlayers()
if #player == 1 then
	print("1 player found in Team")
	--run rest of code here
end

To detect if one player is on a certain team all you need is the player's name. A player has a property that determines the team it is on, so you can check that way.

If PlayerName.Team == game.Teams.TeamName then
	--do stuff
end

As far as I'm sure, this method is for server side only.

There is a Player.Team property inside the player.

so you would do:

local PlayerOnTeam = 0
for _,i in pairs(game.Players:GetChildren()) do
	if i.Team == game.Team.Teamname then
		PlayerOnTeam = PlayerOnTeam + 1
	end
end
if PlayerOnTeam = 1 then
	do thing if only one player
end

game.Players.PlayerAdded:Connect(function(p)
if p.Team == ("TeamName) then
-- Code
end
end)

An easy solution would be to fire a remoteFunction or remoteEvent depending on what you want the result to be, but here is a way to find the player's team

function onPlayerAdded(player)
if player.Team == ("YourTeamName") then
--Your code.
end
end)

game.Players.PlayerAdded:Connect(onPlayerAdded)

If this doesn't work I'm sorry but i was typing this from memory and haven't actually tested it out on studio.