Dye'd

I tried to dye my hair for the first time alone and it didn't really turn out as planned. I really wanna see my hair in a different color but my hair is too black and thick (if that makes sense) to take in any dye! I'm going to try to dye it a way lighter color in a couple weeks, I doubt this stuff can be healthy for you, right? Idk.. I'm new to this. Meanwhile I love the smell of my hair right now.