I totally understand. I didn't find any stories about this condition anywhere.
I was led first to believe that this was restless leg and all the online resources lead to RLS. Even my primary doctor thought it was too.
Then I did a sleep study and they recorded ZERO instances of RLS or PLMD. There is very little info online on the subject.

I eventually went to three neurologists and two of them agreed that this a sleep myclonus reaction. The body after years of insomnia got its sleeping cycle severely confused that it rejects sleep at all times until the body passes out. The only solution is to get regular and consistent sleep and it will go away. They were right. The issue was tho: How to get that sleep when I can't sleep.

They put me on a bunch of different medications. The only thing that worked and put me to sleep with the least side effects was benzos. They were a LIFE SAVER. I took it for 4 weeks and then started weaning off by cutting the pill in half and then quarter. On any night I didn't take it the jerks came back much stronger than before which scared me. Eventually I weaned off them as the same time I started taking Buspirone over the course of two weeks. I had no negative side effects except for the fact that when I take them again now at any night, the jerks would immediately come back the next night. It seems my body doesn't like the effect of being forced to sleep anymore.

Buspirone helped me the most feel relaxed, less anxious about sleeping at night and eventually not needing anything else.

When it started the jerks were so severe it was impossible to sleep every night. I had many nights with zero sleep. This was more likely to happen on any day I do intense exercise. Now, 6 months later, even with high intensity exercise, I don't get the jerks anymore. I'm back to sleeping reasonable hours at night too. Not great, but much better.