The simplest is Binance.
But you won't make so much money there.
I would suggest decentralized exchanges on different main-nets. For Binance would be PancakeSwap.
For WAX would be Alcor Exchange. For AVAX Pangolin and more.
THere is where you make money cause you can buy coins early for only $5 usd, and when they list in exchanges, you will most probably have $50-$100.