I'm 18 years old and have bags and droopy eyes. What treatment would you recommend? (photos)

Droopy eyes with fat bags? No you do not have these and your eyes look normal, Do not have surgery since the risk of something abnormal is worse than having normal attractive eyes.

I saw a very similar issue in a male college student. Turns out he was having flare-ups of an allergic sinus condition that was visible by lid swelling that came and went. Check in with your doctor for evaluation. You might need to see an ENT.

You have some ptosis of the upper eyelids.  Some people like this "sleepy eye" or bedroom eye appearance.  If it bothers you there are surgeries that can be done to elevate the eyelids.  See an oculoplastic surgeon who will be able to evaluate the muscle function of the lids to determine what would be the best thing for you to do.    

You may have early Ptosis. See an Eyelid Specialist who can assess your eyelids. If you do have Ptosis, you may not need Surgery straight away but sometime in the future. The young people that I have operated on for ptosis are mainly due to asymmetry. You have lost volume under your eyes and hence the dark circles are prominent. Once your rule out allergies you will need some fillers to volumise the under eye area.Hope this helps

You have very little fat pads in the lower eyes just dark circles.   This may be due to allergies Get tested by an allergist and they may be able to help you.  The upper eyes do appear droopy so you may have ptosis.  Go to an Opthalmologist for proper evaluation.  Best to you