Which surah can help me get out of my depression

Assalamualaikum.A few days ago I came to know my term final result and since then I am in great depression.I just can't get the result and my failure out of my head.This sort of things happened with me a year before but I somehow managed myself not getting into the acuteness of it by communicating with my friends and cousins.But this time it's worsening with every passing day because I am under lockdown since past 2/3 months.i am not even able to catch up on a sound sleep for almost 4 days.Would you please suggest me anything any surah or Hadith or anything to get rid of my current condition?