I'm turning 23 soon and depressed about hair loss. What stage of baldness am I in and what can I do about it? (Photos)

First of all there's no need to get depressed.You have a receeding hairline and areas of thinning over the midscalp an the crown .otherwise your scalp appears covered with hair.You need  to get a  proper clinical examination of your scalp and then start on finasteride tablets,topical minoxidil solution and prp injection therapy to prevent hair loss and help in improving existing hair quality .

Hello
  I have seen your pictures. You are losing hair from  the crown area. This responds well to DHT blockers as Finasteride or Dutaseride. You can combine this with Minoxidil 10 % topical twice daily. You can combine this with Platelet Rich Plasma Therapy sessions, Mesotherapy with Progesterone and Dutaseride and Nutritional Supplements as Biotin, Zinc, Vitamin B complex, Vitamin D3 is  preferably given in low dose as Cyclical Therapy. In my experience, most people respond to Minoxidil and DHT blockers in 3 to 4 months time,  but have difficulty  in maintaining the consistency in treatment. They usually either stop using these or become very irregular in  the use of these medications.  If you can be  regular in the use of these you can expect great results in the long run. I would not advise you to undergo Hair Transplantation at this stage as we can delay it as a last resort and first try PRP , Minoxidil and LLT lasers.
One important thing few things as Smoking, use of Anabolic Steroids, Hypothyroidism should be avoided or treated as they increase hair loss.