I dyed my hair at home, but the color turned out really bad.

I didn't want to spend that much money at the hairdresser, so I tried doing it myself at home with bleach, but my hair turned out orange; I mean, I'm literally walking around looking like a carrot right now. I wonder if applying something ash-colored would fix it or if it would ruin my hair even more since it's already really damaged. To be honest, my friend's wedding is tomorrow, and I have no idea how I'm going to go with this look. Please give me some advice!