From my personal experience, I found trading exotic currency pairs to be more complex than other pairs. Moreover, unlike major pairs, such as EUR/USD, USD/JPY, etc., they don’t have tight spreads.
They are complex pairs to trade because they have high volatility and it is quite difficult to predict their price movements. Hence, it is advised to not trade with exotic pairs at least in your early stages of trading.
Yes, such pairs contain currencies of developing or unstable economics. Hence, the price movements can be very volatile , making it difficult to predict the market.
I’d suggest beginner to begin with one of the major currency pairs and focus on it. They can trade exotics when they have gained a certain level of experience and knowledge.