maybe in terms of spreads and balances that are too large make traders not take part in the pair. Besides, the fundamental news itself cannot be understood by traders, so exotic pairs are less desirable and more likely for major pairs or cross pairs such as EU, GU, EJ, GJ. In trading itself, we always keep in mind the risk of trading, if we can't get an explanation from exotic pairs, we should avoid it because our target is to seek profit and limit the risk or loss in trading. you can also use a demo account if you are curious about exotic pairs.