Is it therefore a possibility that one can steal from it? By randomly arranging the 24-word mnemonic, you will arrive at a particular wallet address with its corresponding private key, and if that address has a deposit, you can easily import that address because you already know the private key, and make the withdrawal. Or am I wrong somewhere?
Yes it is possible. If you are feeling lucky you can try.
I warn you: it is easier to be hit by a lightning 10 times in the same day. Or winning 10 times in a lottery.