If you still want to trade contracts, then you need to ask yourself a few questions:

1. When you're right about the direction, can you ride the entire wave of the increase? Or do you hesitate and sell off right after a small rise?

2. When there's a drop, can you execute your stop-loss strategy as planned? Or do you continuously lower your stop-loss threshold until liquidation?

3. Is your win rate high when trading?

4. Do you make more on each trade than you lose?

5. Will you strictly adhere to your position management and avoid over-leveraging?

6. Do you impulsively open trades after a loss?

There are indeed too many questions, and even if you manage to do all of the above, you might still get caught by a black swan event, with no opportunity to close your position at your pre-set stop-loss price. In that case, would you still want to trade contracts? Let alone those 10x or 20x contracts.