Can't lose weight

I was skinny a year ago because of a strict diet, but last winter, I gained weight because of the cold weather. Now, we are in summer, and I can't lose weight again. I was avoiding fats and carbs completely for 6 days a week so I was skinny and fainting a lot. Now, I ate fats and carbs every day but with limits as it is healthier, but I gained weight then. I tried to limit my calorie intake three months ago and I didn't lose weight until I made it very strict for a week, but I got back to eating a lot again the next week.

There is a specific limit in which when I follow, I lose weight, but I fail to follow it because I take anyipsychotics that make me have high appetite and low calorie burn rate.

I did some changes today in my plan. I decided to reduce the calories of the day after the day I mess in eating, and adjust my workout burn count, and keep walking every day.

I hope I come after a few weeks talking about how I succeeded.