At Web3, you are responsible for the safekeeping of your cryptoassets and NFTs. For this reason, you must take the necessary measures to never lose access to them.
This point may seem obvious, but many people have lost access to their cryptoassets (as of today, it is estimated that millions of bitcoins are lost). Therefore, you should take all the necessary measures for your case to prevent something similar from happening to you.
In relation to cryptocurrencies and wallets, the concept of "seed phrase" is important. The seed phrase is like the key that gives access to your wallet; it is like the code to a safe.
You would never want other people to have access to that code, which is usually a series of 24 words, and you would certainly never want to lose or forget that code yourself.
If it were a safe and you lost the code, you might have a solution: break it or open it by force. But in the case of cryptocurrency wallets, there is no such solution, so it is best to write down the seed phrase on different papers (not on a computer) and keep them in different places that only you know (if you share the seed phrases with someone else, make sure it is someone you absolutely trust).
Remember: in the world of cryptocurrencies and NFTs, you are the one who has the power and also the responsibility.
Indeed, you must do your research and take all the necessary precautions. The level of study and dedication you make will certainly have a correlation with the amount of capital you expect to accumulate. However, keep in mind that a crypto-asset that you can save today may, perhaps, in a few years, increase in value.