Titanclaws

Hello, ive been having this problem for a long time now, and i could never find out how to fix it. Ive looked up how to uninstall java 10 and 9, and nothing worked. I watched that video about the automator and the terminal as well, and still, NOTHING. Im really upset because i just want to play hexxit man, and Ive tried literally everything. You guys are my last hope. PLEASSEEE help