Why do i only eat food whenever im feeling for it? and i restrict myself from eating so much or everyday i skip meals. i feared being healthy and gaining weight but i dont know why?

If your weight is stable, your eating habit is not a concern. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV, Flu and Covid vaccines. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelin

I'm concerned that you have a type of eating disorder ,especially if you're overly concerned about weight gain and if you're already quite slim. Only if you think this describes you, consider consulting a mental health professional for an evaluation and advice. Otherwise, as Dr. S states, there is not a problem.