My hair problems..

I cut my own hair and I've tried to dye it myself which hasn't turned out well.. my hair looks okay but the black colour fades out SO fast and naturally my hair is wavy/curly so it just super bad if I don't style it..AND in my opinion my natural brown hair looks SO stupid and when it starts to peek out from the black hair dye I literally don't even wanna go out in public cuz of how humiliating it is..I'm super jealous of anyone with straight black hair..they have it so good.