M24 nutrition and vitamin advice

was wondering if eating like a dog with same 5-10 ingredients weekly yields good results or if i should eat a little freely. my goal is to cut fat and build muscle i’m about 170 can’t shake the weight off but i’m okay with that i’m 5’9 decently have some muscle building currently. hit gym 4-5x per week and started taking beetroot magnesium vitamins. was wondering what else i should take.