broken launcher even after reinstall

so I found my old game band and tried to get it to work and it said something about resetting launcher profiles, so after I was done trying to get it to work, I went to play Minecraft through the normal launcher, and I relogged and created an optifine thing and then I click play and it goes grey, doesn't launch Minecraft, and I cant play Minecraft I even tried uninstalling and reinstalling and it doesn't work.