Is it safe & legal? (Risks)

The simple answer is yes. On-chain (decentralised) activities do not have an age limit (since its basically the same as surfing the internet), so it is 100% legal for even teens to try it out. However, when it comes to buying/selling crypto with money at hand at CEXs, you must be an adult with bank details and identity verification details (or have adult supervision).

There is a general misconception that Crypto is illegal in some countries which is not true. Some National Financial Institutions do not recommend it, that all. You are good to go if you stay on-chain for the most part.

Though it is fairly safe and secure to trade on-chain, you must always be careful when interacting with unknown platforms, they could be scams.