First, make sure you can double your first investment. Once you achieve that, then focus on doubling the profit you got from the previous investment with the actual amount too. I don't wanna guess the amount that you put into investment but in order to explain let me pick a number.

Let's say you put $50 into your first investment. Try to make that $50 into $100. Work till you make that happen. Then with the $100 make a target to turn that into $200. This way, even if your investment is a low amount, you can work your way through this and turn that small amount into a huge profit. As the market will turn bullish again, this could be a great opportunity to do it. Set a target and never get affected by your emotions. Such as fear or greed. Set a target in order to double your investment and then sell or HODL till it is reached.

If you follow this, you may have to take some risks but in the long run, it is really worth it.