You must think positive. You have $50 and the bitcoin price is $7250. you can buy now and sell when the price reaches $13000- $14000. then wait for the price to fall to $9000 and buy again and sell When the price reaches $16000 - $18000 for example. and wait the price to fall to buy again, repeat this process for a long time that you will turn your $50 into more money. Just imagine that if you bought when the price was $3000 and sold when the price reached $ 12000 you would make $ 200 profit and then buy back now at $7000 and wait the price to reach $14000 to double $200. I'm saying this so you can see that you can turn that $50 into more money