I've been dealing with lifelong depression, so I certainly empathize with your situation! I'm not a professional astrologer, but here is what I see in your chart. I'm always trying to improve my skills, so let me know if I'm accurate here or not:
Key Life Theme: Most of your planets are in the Southern Hemisphere (upper half). All the the planets in your Eastern Hemisphere (left half) are retrograde except for the Moon, which can't be retrograde. Thus, the Western Hemisphere (right half) is the focus. Your chart's Southwestern emphasis suggests that your impulse is to focus on others, combined with a sense of being victimized by circumstances beyond your control. You look to the world to define your identity, because of inadequate identity formation in your childhood.
Your Ascendant's ruler (Pluto) is retrograde, further corroborating delayed identity development. This delay is possibly connected to a problematic relationship with your father, as your Saturn (which symbolizes the father) is retrograde. Perhaps he wasn't physically in your life, or he was in your life but emotionally uninvolved with you. It looks like your mother picked up the slack, as Neptune and Uranus are conjunct your Nodal axis which suggests a strong maternal influence in your life. Saturn sits in your 3rd House of Communications (and also rules that house), so this has significantly affected your mindset towards life.
Furthermore, Saturn is opposite your Mars, Venus, and Jupiter. Mars rules your 5th House of Pleasure and 6th House of Health. Due to intercepted signs, Venus rules your 7th House of Partnerships, 11th House of Friendships, and 12th House of Self-Undoing. Jupiter rules your 2nd House of Value. Thus, your chart suggests that the fatherhood issue affects your self-worth (2nd House), sexuality (5th House), how you interact with co-workers (6th House), your romantic relationships (7th House), your feelings about you being lovable to others (11th House), and your subconscious (12th House).
Other Issues: I'm not sure, but I think your Moon (which represents your emotions) may be considered peregrine. Its contact with Neptune is definitely at an out-of-bounds orb. I'm not sure if its contact with Uranus also counts. An unaspected Moon dominates a natal chart.
While not noted on the Astro.com chart, my software shows that your Sun is quindecile Uranus, which means that changing your environment is an obsession for you (perhaps so much that it's chaotically taking a toll on your psyche). You also have Mercury quindecile Uranus, so your thoughts (Mercury) have at least one obsessive component.
What's Next? Your True Node (life's destiny/future goals) is in the 2nd House of Value. Your life's mission is to improve your self-worth. The good thing is that you're pretty young (21yo) so you're ahead of the curve compared to many people.
While only 2 quintiles (which symbolize creativity) show up on your chart, my software claims that you actually have 4 quintiles (Sun quintile Moon, Moon quintile Mercury, Moon quintile Pluto, and Moon quintile Ascendant. Do you have some outlet in your life to express all of this creativity? If not, that may help lower your depression.
Hopefully, more experienced astrology students can better advise you on how to proceed.