What thinks should be change in Cryptocurrency is changing money, but some things need to improve.

First, there should be clear rules in all countries so people can trust it.

Second, security must be better to stop hacks and scams.

Third, mining should use less energy to protect the environment.

Fourth, apps and wallets should be easy to use for beginners.

Finally, blockchains should be fast and low-cost so more people can use them every day.

If these changes happen, cryptocurrency can become a safe, useful, and trusted part of daily life.