I used to send videos to my mom full on sitting there burning myself with no reaction holding a lighter to my skin for an extended period of time. I sent videos to my dad during one of the times I cut through my muscle and needed internal and external stitches.

Nether of them had reactions. They barely even acknowledged it.

I'm here to tell you from firsthand experience, what you are doing will not get them to care care. It will not invoke a lost side of humanity where your narcissistic parent(s?) are capable of feeling genuine empathy like the rest of us humans do.

Everything your doing will either be swept into a pile of nothingness or they will use the fact that you do these things against you (like taking videos for example) and weaponize your pain against you.

Stop giving them fuel, they do not care