Have you tried old school country music?

Some of the modern stuff, but mostly stuff from 20-30 years ago that's just sad as fuck.

Just get in your own head and start thinking of past regrets and people who are gone.

Like, "having a good cry" honestly helps, so it's worth putting the work in to "learn" to cry. It's flushing out hormones and neurotransmitters, and can lower cortisol which has a whole bunch of benefits.

So maybe not country, but find some music that makes you emotional and start a straight up "crying playlist" to get you in that headspace. It'll get easier overtime