This is one of the most important things anyone who carries should be well versed in.
I’m fortunate that I train with a former Gung-Ho Chuan Association Instructor (GHCA) who is also a former LEO like me, and we train this often. The GHCA was formed decades ago by Bob Kasper, Kelly McCann and a couple of other hard-charging former military guys.
Craig Douglas (aka SouthNarc) also has a very valuable class called ECQC (Extreme Close Quarters Combat) that is as good as anything out there in this space. He has a bunch of videos on YouTube and FaceBook under his ShivWorks brand. Great material.