textlabel dosent change in base of team, how can i fix this?

hello im a newbie in scripting and i'm making a game and it has 3 teams i created a gui with textlabel and the text change in base of the team name , colors too but it dosent work, how can i fix it?

local player = game:GetService("Players")

		if player.Team == ("clandestin") then
			script.Parent.TextLabel.Text = player.Team.Name
			script.Parent.TextLabel.BackgroundColor3 = Color3.fromRGB(190, 71, 11)
		end
		if player.Team == ("cittadino") then
			script.Parent.TextLabel.Text = player.Team.Name
			script.Parent.TextLabel.BackgroundColor3 = Color3.fromRGB(0, 255, 0)
		end
		if player.Team == ("controllore") then
			script.Parent.TextLabel.Text = player.Team.Name
			script.Parent.TextLabel.BackgroundColor3 = Color3.fromRGB(22, 67, 190)
end 

Btw please use Lua Code Block for future questions.

local plr = game.Players.LocalPlayer
local chr = plr.Character or plr.CharacterAdded:Wait() -- makes sure player loaded in before script ran

if plr.TeamColor == "" then
	script.Parent.TextLabel.Text = ""
	script.Parent.TextLabel.TextColor = ""
elseif plr.TeamColor == "" then
	script.Parent.TextLabel.Text = ""
	script.Parent.TextLabel.TextColor = ""
elseif plr.TeamColor == "" then
	script.Parent.TextLabel.Text = ""
	script.Parent.TextLabel.TextColor = ""
end

Change TeamColor to the color of the team.

so i changed the script and now is

local plr = game.Players.LocalPlayer

if plr.TeamColor == "CGA Brown" then
	script.Parent.Text = "clandestin"
	script.Parent.TextColor = "CGA Brown"
elseif plr.TeamColor == "Lapis" then
	script.Parent.Text = "controllore"
	script.Parent.TextColor = "Lapis"
elseif plr.TeamColor == "Lime green" then
	script.Parent.Text = "cittadino"
	script.Parent.TextColor = "Lime green"
end

-- this script is from SitaruDaniel, credit added by 322ita--

but there is an error saying Players.322ita.PlayerGui.ScreenGui.TextLabel.Script:3: attempt to index nil with 'TeamColor'

what should i do?