Bybit, FTX, binance. I wouldn't trust any of those exchanges serious money, but they are offering 100x leverage. You only deposit a fraction to the exchange , so your risk is kept relatively low even if exchange goes bust. Also i think equities are becoming more and more like cryptos. There's no fundamentals in cryptos, it's basically only trading based on psychology of the crowds... And stocks are doing the same thing lately, they are trading like a bubble.