It was very controversial the referee at Bahrain vs Indonesia match, Indonesia failed to secure three points after conceding in the final minute of added time.
Hopefully, they learned from this and aim to secure victory with 2 goal difference or at the very least improve their concentration in the last minutes of a match so they don't concede late goals again. Complaining about unfairness can't guarantee anything IMO, even if governing bodies revise or stop using a controversial referee I don't think they'll change the results of a match that has ended. A football team can only depend on themselves to secure 3 points in this modern time.
So it is their fault while Indonesia is not that strong and better team. Against Bahrain, Indonesia could not win the match, if they worked hard against them, they could have won the match. But they could not succeed, which was the real reason.
If they look better in the next matches, sure, but teams like them learn very little. But the referee shouldn't have done it because that alone explains why. If it will do such things, it should really be applied for. So team should work hard and get points, if not next time play with good preparation and win. But if a hard-won team is treated unfairly, it is an insult to the game.