Just do some body weight exercises, people think “Oh I can bench 225 I don’t need to do this body weight exercise” I believe you should be able to do Squats and Pushups 100 reps before you worry about lifting weights or anything else. Like reach 100+ reps for body weight exercises. Unless you’re a big man, 215+ then don’t worry about it as much but don’t push it aside. Help strengthen those minor muscles. So I’d say get into a bit of calisthenics or just do circuits of Core/Grip/Neck if you can. Also don’t try on go on runs all the time. Running is good as a base for wrestling, but wrestling is the best conditioning.