It's not that you're "different" but that you've made bad choices. You've harmed yourself by cutting yourself, smoking, and doing drugs. That's a sign that you have issues that you need to work through.
Basically, it sounds like you fit the look of a "goth". Goths don't have a good reputation and you will probably have this same treatment from people once they see you until you change your look. To be honest, there is no need to wear four inch platform boots, have such long hair in front of your face, or to wear makeup. It seems like you're trying to make a statement with your clothes and makeup.
It also seems like you might have social anxiety issues since you cover your face with your hair, maybe to hide from others and you don't leave your room. Dressing in a way that you know will evoke a negative reaction out of others is not helping your anxiety.
Here are some steps I recommend you take:
-Cut your hair. It may be scary since your hair might have felt like a shield but you need to learn how to deal with the outside world without hiding yourself. Also, stop wearing makeup, stop painting your nails and wearing platform boots. It might also show your family and others who may have had a problem with your goth image that you won't use such an image anymore.
-Take care of yourself. I understand that you have depression issues but it will not help you at all if you harm yourself by cutting, smoking or doing drugs. If your family is supportive, tell them you want to seek counseling for these issues. Do this for yourself as you will benefit the most from this help, not friends or family.
-Do something outside - take a walk, go to the convenience store to browse the magazine section, etc. It may be outside of your comfort zone but you can't stay inside your comfort zone forever. You have to move forward and the first step will take a lot of courage. Try to do something outdoors regularly. Hopefully, this will help you to grow accustomed to it.
-Surround yourself with positive things. They don't have to be obnoxiously happy-go-lucky or anything but it should encourage a positive outlook on things or else be neutral. I don't think Marilyn Manson's music will help with your depression. His lyrics seem either disturbing or else depressing. For someone without major depression issues, it would be okay but I don't think that's healthy for you.
In no way do I believe that one has to fake it in order to be accepted but in my opinion, your problem is your depression and I think your priority should be to improve your outlook on life and your self-esteem and repair your relationship with your family. A goth image is usually just an image someone takes on, in my opinion. You can be both yourself and non-goth. I hope you do get help. Feel free to message me if you need any advice or just for someone to lend you an ear.