I have multiple, but the biggest one is definitely Less Than Nothing by I Hate Myself. That song has gotten me through so many rough days, whether it be due to gender dysphoria or my family driving me insane, it's just been there with me through it all and for that reason it's also my current favorite song. Some honorable mentions for me are also Wrist Meet Razor by Usurp Synapse, Bright Lights Fade by Secrets Kept in Suicide, and Adam's Song by Blink-182.