The most painful thing is what I'm going through right now. When I deposit to an exchange, but the exchange does not credit our deposit on the account. That exchange is a scam, stealing customers' money. Be careful of all of you. I lost almost $5000 recently. Even more so because the coin I intend to sell the price is getting up. You better trade on exchanges that have a good reputation.
Fake exchanges have sabotaged the price of coins to be higher than the average price on other exchanges, because victims feel they are benefiting from arbitrage so deposit to the exchange in hopes of instant profits, the exchange does not credit you the deposit because the balance is in the scammer' wallet. Beware that fake arbitrage signals also spread within the telegram spammer group.