Can't sleep and I feel so sad

I have felt so awful for so long now. I've lost 3 family members and my cat in less than a year, dislocated my elbow, got into a car accident (not related). It's also been really hard because I've been unemployed for a while, and it's hard to find work. It's been really hard and I feel the worst I've felt in my entire life.

I made another post (not here) and it was supposed to be a super supportive, non judgemental community. Most people who replied were really nice, and I was venting about how hard unemployment is and how you shouldn't quit a job without having one lined up. I said that because I have been unemployed for a year and a half because I didn't have a job lined up, and someone commented saying that I hadn't learned my lesson because I did the same thing two months after quitting my first job. But that was literally almost 2 years ago. I fully understand the consequences of my actions and it has ruined my life. Having no job is miserable. I literally would not have been making that post if I hadn't learned my lesson. I don't know, it just made me really mad because I already felt awful.

To be honest I just want someone to tell me what I can do to improve my mood and care for myself better. I've started an SSRI (well I will soon) so that is a huge start, I've been wanting to do that for years, but I just want things to give me a sense of purpose. I feel really useless right now, especially in unemployment.

This was a bit all over the place, I know, but I need to be up soon lol. Thanks