What can you do when a friend in a really bad situation reaches out for help and you miss the subtle messages and can't connect when the direct message is sent.

My friend left several subtle messages for me that they needed help, and because I suck at subtle, I missed them. Then they sent a detailed message explaining what they we’re going to do, and I could never make contact with them for various reasons. I think my friend took some pretty extreme steps, although I don’t have any direct proof. I’m really hoping I’m wrong and you can all have a big fucking laugh at my expense, but I’m thinking otherwise. Any suggestions? I really feel like shit.