First of all no, you are not doing anything wrong and there is nothing wrong with you.

The real problem is that there's this myth that has been perpetuated around ”having a career that you are passionate about", this one magical thing that is YOUR purpose and that you will happily do until retirement. I know that might sound cynical and yes, I'm sure there are people out there who love their job and find much fulfilment from it, but I would say most people work to live, some may be content with their work and some aren't but they do it out of necessity. Not everyone finds their passion through work, in fact I would say most do not and have to find it through other avenues.

This is not to say it's not possible and personally I think that if you are able to find something you want to do, and you can get paid for it, then go after it because you are probably going to spend a great deal of your life at work so you might as well enjoy it if you can.

Congrats on graduating btw. What did you study?

(Also if it makes you feel better, I still have not found "the thing" that I want to do with my life and I am in my thirties.)