how can i teleport to one place then be teleported back without being in a teleport loop?

i wanna teleport to one of my other places using the TeleportService then get teleported back to the main game, but everytime i try i keep getting into a teleport loop. here is my scripts:

local teleport = game:GetService("TeleportService")
local plr = game.Players.LocalPlayer

print('Teleporting')
teleport:Teleport(Placeholder, plr, data)

script in other game:

local tp = game:GetService("TeleportService")
local player = game.Players.LocalPlayer

wait(3)
tp:Teleport(dataid, player, data2) -- Teleports them back

can someone please help me? this is my second time trying the teleportservice.

In your first game, create a boolean called, for example local haveTeleported = false. Then, still in the first game, check to see if haveTeleported is equal to false if haveTeleported == false then and only if it is false do you set haveTeleported to true and then teleport the player.

Like this

local teleport = game:GetService("TeleportService")
local plr = game.Players.LocalPlayer
local haveTeleported = false

if haveTeleported == false then
	print('Teleporting')
	haveTeleported = true
	teleport:Teleport(Placeholder, plr, data)
end

This way when you come back you won't be teleported again. Hope this helps!