This is the tl;dr version. I am in no way qualified for the advice I'm repeating here and would advise working with a professional s&c coach and consulting a medical professional before starting anything related to this kind of programming. But what I've learned so far is this: Two full body strength sessions per week are awesome. One is great. Three, four and five have diminishing returns. Meaning you'll be sore for your skills work. Always warm up properly. Then start off with plyometrics like jumps, hops and leaps. Next do your main three lifts, like squat, bench and row on one day. Deadlift (or rack pull), incline bench and a pull variation the other day. Add in some accessories (neck work, mobility exercises,...) throughout as circuits so you don't waste time waiting. And at the end to cool down. A good video on training splits for combat athletes: https://youtu.be/6FArXgCAeds?is=Vd6lUnpIqCcs_EwA

Due to an old injury, I always suffer from significant tension in my back and neck. This causes my lower back, upper back, and neck to stiffen up quickly. According to my current physiotherapist, the issue is that my left glute does not activate properly and is too weak, so it isn't doing its job correctly. I am currently working with weights to strengthen this left glute and the surrounding muscles. The goal is to get it functioning properly so that, hopefully, I can eventually continue sports and training without needing to visit the osteopath every month.