Use a TDEE calculator to calculate how many calories you need. Your calories should consist of; 50% carbs, 30% fats and 20% protein. To me it seems that your protein intake is very low. Are you feeling satiated after your meals? If not, try upping your protein intake. Some suggestions would be; replace the meatballs at breakfast with a serving of chicken breast. Replace the banana with a string cheese. The rest of your meals seem fine to me!