Mexc Global is a good exchange, but there are other exchanges that are having good services too. If it is no KYC exchange, there are still some too, like Kucoin.
You make profit from trading, not because of the exchanges that you you are using.
I will advice people not to trade with many altcoins because altcoins are like gambling. If they go in the direction that is not favouring you, it would be a big loss.
Im sorry but trading an altcoin gambling ? No I dont think so. Altcoins have made people millions $$, coinmarketcap reports daily volume of trades to 20.000.000$. Total marketcap is 1.1Trillion USD$ as of writing.
Gambling is gambling my friend.
Obviously HODLing a fresh altcoin is stupid as fck.bcs of instability and frequent large dumps
But trading is a good thing overall.