Don't you think I am the worst engineering student ever?
Why do you think you're the worst engineering student ever? I beg to differ.
There's a reason behind that. I'm not someone who's passionate about engineering and I find it hard to like anything in the field of engineering
It's understandable that you are frustrated studying engineering as it can be a difficult subject to master. However if you find that you can't enjoy any part of engineering, it indicates that you aren't a good fit for the subject and should look into switching into a field of study that you would enjoy more. Studying a subject that you do not like will only lead to a job related to the subject that you do not like and this outcome should be avoided for the sake of your mental health.
I have a little problem of anxiety that's why I can't do engineering.
I find you to be really smart and can accomplish anything you set your mind to. However, passion is very important when it comes to your career you are smart for realizing that engineering is not for you. It's always better late than never to switch majors.