My playlist is:
Last Words of a Shooting Star - Mitski
You Gotta Die Sometime - Falsettos Soundtrack (from a musical about a man dying from AIDs, not specifically suicide)
Friend, Please - Twenty One Pilots
listen before I go - Billie Eilish
Suicide - Isaac Dunbar
Bulls in the Bronx - Pierce the Veil (Specifically for the one line in the bridge- "Cause I would rather end it all tonight, and if I mean anything to you, I'm sorry but I've made up my mind.")
Twenty One Pilot's self titled album has a lot of good songs for when you want to feel sad/worse, my favorites being Trapdoor (what I named my username after), Taxi Cab (the end verse describes a man thinking of suicide and the last line in the last verse says "We're driving toward the morning sun where all your blood is washed away and all your did will be undone." It's meant to be religious, i.e finding Jesus and being saved/forgiven, but I view it as going into the light at the end of life), and a few others that imply suicide or heavy depression. TOP, as made fun of as they are, have good, heavy songs for when you need to feel worse, especially in their earlier albums.