Wallet hacking is indeed possible. So, you need to consider some security measures while trading crypto or storing crypto in digital wallet.
Also, make sure you pick the right digital wallet for you.
Here's a guide that might help you with choosing the right digital wallet - https://www.altcoinsidekick.com/bitcoin-basic-blog/choosing-the-right-digital-wallet-to-store-your-cryptocurrency

Also, you can keep these security tips in mind to secure your wallet - https://medium.com/@odeskpawan1/how-to-prevent-your-crypto-wallet-from-being-hacked-1a15b55fdf69