1. High volatility: Prices change drastically in a short time, making it difficult to predict when to buy or sell.

2. Competition with large investors: There are investors with a lot of money and advanced algorithms that have an advantage over small traders.

3. Projects without real value: Many cryptocurrencies have no utility and only rise due to speculation, which causes many to collapse over time.

4. Frauds and scams: There are many cryptos designed to deceive people, causing them to lose their money.

5. Regulation and uncertainty: Changes in laws can affect the market and cause some cryptos to lose value.

6. Difficulty entering and exiting: Not all cryptos have enough liquidity to sell them easily when needed.

7. Emotions and bad decisions: Fear and greed lead many people to buy at the top and sell at the bottom.