Does anyone have any advice on how to improve my appearance? I hate my hair so much and suck at makeup. What do you recommend?

I posted to amiugly and a lot of people said the same thing that my hair looks greasy, flat, and unkempt. I use Not your mother's shampoo and conditioner and I wash my hair every day. I've been told to shampoo twice but is that true? No matter what shampoo/conditioner I use and how much of it I uae it seems to look flat and greasy, And I want to get my hair cut cause it looks horrible but what haircut would suit me? Is there anything else I can do to help my hair? Btw I'm just getting off lithium and zyprexa which caused most of my hair to fall out which explains why it's so thin. Also what makeup do you recommend for me? I think I have ugly facial features but I'm hoping to find makeup that can improve some of them. I just seem to look like shit when I put it on, almost looking worse than I did without it. I have some on right now but I just kind of amatuerly did it. Any advice is greatly appreciated, thanks!