You must build brute strength in your legs for fighting.
There are 3 different Zercher movements you need to be doing: Zercher Lunges, Zercher Deadlifts and Zercher Squats.
And in this routine it's all about Zercher Squats.
For fight strength there is no need to ever do standard barbell on your back squats. Zercher Squats or any Zercher movements are far better for building your leg strength by also engaging your upper body. The upper body movement is concentrated by holding a barbell across your arms closer to your body as a grappler or wrestler would with their opponent.
In this routine you'll do ONE single exercise.
Most of the time when doing legs with heavy weight, one exercise is enough without having to add second or third exercise and doing them as supersets.
For a complete fight cardio program you can follow, see "Sprawl and Brawl: Solo Fight Cardio Training Program". It will help you develop killer fight cardio anytime, anywhere with no equipment and only 15 min per day and 4x per week.
Fight Training From Home Programs/Courses
Whether you are a professional or a beginner, you'll be spending majority of your life training solo (from home or on the road). Working on technique, drilling, developing strength and cardio. I've been training all my life. Here are some of the best programs and courses to start or continue fight training from home.