I hate my nose it's so fat and It makes me so insecure. I feel like I would be happier if it was smaller. (photo)

Hello and thank you for your question. Based on your
photograph, you may benefit from a tip refining rhinoplasty. Your surgeon can
accomplish this by trimming, suturing, and reshaping the cartilage in your
lower nose.  Make sure you specifically look at before and after
pictures of real patients who have had this surgery performed by your surgeon
and not just a computer animation system. The most important
aspect is to find a surgeon you are comfortable with. I recommend that you seek
consultation with a qualified board-certified plastic surgeon who can evaluate
you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

Any wide nose can be narrowed by adjusting the thin nose bones and cartilages. Your nose is slightly more challenging than an average nose because of minimally thicker than average skin, a condition called cephalic orientation of the lower lateral cartilages, notching and asymmetry of your nostrils (your right nostril is wider) and slight deviation of your tip to the left. You may wish to consult a board certified plastic surgeon who has enough expertise to notice these and deliver a pleasing outcome.

A full set of facial photographs are required including the nose to make a determination about what can be accomplished with a rhinoplasty procedure. From the one very limited photograph, it appears that there's a wide nasal tip  and a wide nasal bridge which can be narrowed.  Rhinoplasty is a very difficult endeavor, so choose your surgeon very wisely based on extensive experience with the procedure producing natural results. For more information and many examples of rhinoplasty, please see the link and the video below