My chest keep breaking out and I keep it clean, I clean it everyday with soap and water then add…

My chest keep breaking out and I keep it clean, I clean it everyday with soap and water then add alcohol I don't even put lotion and it still get pimples smh I have a habit of trying to scratch or pop them off and all it does is leave dark marks I was so obsessed with my cleavage now I don't even wanna look at none of my v neck shirts or tank tops smh...am I the only one dealing with this and who can give me good advice on how to stop this and get these marks off It'll be greatly appreciated😞???