No eye gouging, no kicking/knees/stomps to rhe head of a grounded opponent (we are trying to get this repealed because oneFC allows it). No shots to the back of the head, certain risky submissions are banned. Up until recently you couldn’t elbow straight down from top position. No cage or glove grabbing. No slams with intent to cause injury (spiking on their head). No headbutts or finger holds. Basically all the high risk injury causing stuff is removed.

You got to understand that these are trained professionals who know how to defend themselves. Its more of a complex strategy game out there for them than trying to kill the opponent.