Here's a funny thing.
In September of this year, I looked at the cryptos available at Nubank and saw that $XLM was below 50 cents and bought 30 reais of it. That money would not be missed at that moment. A week later, I had 47 reais, I was happy and bought another 40. It had its ups and downs until it reached 302 reais at the end of October. Wow, I was very happy and left it waiting for it to grow more. The next day it fell to 233. Then the happiness didn't last long, lol, I got desperate and sold it when it stopped at 236 reais.
This is so you realize that cryptos are very volatile and all currencies will go through this, and you will have to choose between waiting for it to appreciate in the future or fighting to buy and sell everything to make a small profit.