If you want to trade, my advice is to choose to trade on a large altcoin exchange, which also has a lot of potential and popularity, whereas if you trade on a small exchange, the limit provided is also limited and that's certainly not far from the risks we face, it could even be losing the money you have.
it is better to trade on decentralized exchanges. Otherwise, until you withdraw your tokens from the exchange, consider that they are not yours. All because the centralized exchange can easily block them indefinitely.
You dont have the keys then its not your money or coins and this is what you should think off whenever you do really deal off with centralized exchangers.
Im not saying its bad to deal with small ones yet it cant really be denied that there are some coins which are only listed on these exchange which you cant find on bigger ones.
Finding gems or have potential wont be easy because usually coins been listed on these exchangers arent really worth the attention.