>>7009706https://youtu.be/xSeBEgFjGLA?t=54s (time stamped because first 50 seconds or so is him talking about the song, somewhat slowish song, but it's about a parent dying by drug use)
https://www.youtube.com/watch?v=N57gnfF6dog (another classic good song about losing someone you love to drugs)
https://www.youtube.com/watch?v=4qIXcwZ1cYA (more upbeat than the other two, still very sad and meaningful lyrics, if they apply to you)
https://www.youtube.com/watch?v=oZdiXvDU4P0 (Not really a feels-ish feeling song, but Billy Joel's message in this is very deep)