Do you think I should quite my job because I don't think I'm a good fit for it?
Why do you think you aren't a good fit?
I'm too young and I'm not doing the tasks very well.
You might be right and it's not a good job for you. Before you quit, you should work with your boss and see if they can help you improve your skills and become better at it.
I'm going to quit it's not worth it.
I really think you should try to talk to your boss or coworkers before quitting, because they might be able to give you some advice to help you get better. You should give it a little more time.