The best way to keep your bitcoins safe, is to use a hardware wallet that have stronger cryptography that web wallets.
If you store your coins in exchanges you are most likely to lose them, because exchanges receive the most cyber attacks.
thats true but having a hardware wallet is so expensive not every one can afford it. but if you have a budget why no all of the people wants to secure all their money. Bitcoin is safe as long people knows how to prepare their wallets and everything most of the thing is the password maybe try to use much longer and complicated password so that the hacker takes a long time to get what they want.