I think, today you can find a lot of information about how to be more careful in crypto world. And of course, you need more practice, often use wallets, markets, etc.
You must be careful of keeping your bitcoin and altcoin to the safest wallet and the private key must be keep safely. You must don't visit to the link that are pishing because scammer can get your private information to scam your wallet. In terms of trading you must be carefully to your customers because a lot of scammer and you must know this person.
Yes it is very important that your wallet is safe and your private key is also safe, so i think you should check to your account because hackers can steal your money in your account, but bitcoin can never lose your money because they try to safe your account for long term and how much you want to hold your money in bitcoin, so you should never be panic about it.