The potential crypto market, but also risky because the cryptoverse is unpredictable. Only invest the money you can lose. I only spend 5% to invest. Only invest in the top 30 to minimize risk.
Use the money you can afford to lose , that's part of bankroll management . I would suggest an arbitrage method to make your risk management become more easier , you wouldn't have to take bigger risk but see an opportunity to do arbitrage are part of minimalizing the risk to lose much money .
That's the safest method I've ever used , other than that trading would always about facing risk.