I want to stay healthy, what is a good eating plan, i weight 110 but i have acne?

so i want to eat healthy from now on!!!!!! please tell me how i can make a good eating plan. thank you!
Update: i can eat meat too
Update 2: im 18, 5;5 i eat a lot but dont grow, my doctor said its normal cause ive always been like this, so dont say im underweight
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