If you do not learn from the experience of others you would definitely have your own bitter experience where learning would be inevitable. The instructions on how to keep your bitcoins safe is so simple yet there are people who lose it because of their greed, their lack of attention to details, just plain laziness which may include, keeping your private key carelessness, drawing unwanted attention to your self in public as Bitcoin investor thereby making yourself a target and so on.
Yes, of course, if a person does not learn from the mistakes of others, then it can become a big problem and trouable for him. Often people are weak in the matter of privicy, they take such stances lightly while it is their biggest mistake, carelessness and laziness, which I say is a proof of the biggest stupidity of this person. Even iff he knows everything, if someone does not respond to any issues regarding privacy, then he is doing something rong with himself because, every day, similar cases are increasing. People underestimate the importance of their privacy, but it is a very serious matter. And if they don't protect their funds in the right way, they lose everything; that is, due to their own mistakes, they find their wallets empty in the hands of hackers.
Moreover, when most people create a wallet, they temporarily take a screenshot of their passphrase and can keep it on their phone. This
YouTuber also did the same, and when the hackers monitored, the hacker hacked the email of the YouTuber, backed up all the data, and stole a million dollars of assets from his wallets by finding the phrase of this wallet.
So, it means that whenever you save a phrase in your wallet, you must write it down on paper and don't save it on your phone, because it can happen to you in the same way as it happened to this YouTuber. So be careful in terms of privacy.