Why is this happening? Why is Life getting this hard?

Hi, I'm 22. Recently graduated, got myself into a company which later denied for the work I prepared myself for, currently jobless for 6 months. Breakup happened with my girlfriend 6 months before too! She left , I got cheated. It's night rn, and one of nights like this. I am sleepy but I don't want to sleep. Right now, chugging my days and hours studying, trying and finding anyone to get a job. Sometimes it makes me go anxious and sometimes exhausted to what and why is life offering so much odds. It's been 6 months she left, I still get her flashbacks. My day is well equipped with work but deep down, it mourns me.