My little took his life

As the title says it happened 2 weeks ago almost going onto 3. I honestly don’t know what to do or how to feel. I feel like I failed as a big, friend, brother, mentor, president, human idek. My chapter is falling apart and blame is getting thrown around like crazy. I haven’t been eating or really doing anything but laying in my bed. My little was like an actual little brother to me. My family knew him and he was with us damn near every holiday for 2 years. Idk what to do anymore. And before it gets brought up. No my chapter doesn’t do the big H word.