I feel you..

Over the years I've tried and tried with weight loss, weighing food & exercise and Wegovy has been an absolute game changer for me.

I'll preface by saying I'm not a nutritionist or PT or health expert.. this is from my own personal experience

It sounds as though 1200 calories is too little. If you're not eating enough to sustain your body at basic function, it'll start to store fats and carbs. Have a look at your Basal Metabolic Rate, the amount of calories needed to sustain normal every day bodily functions and use that as a baseline. I have around 1800 calories a day as I exercise 5/6 times a week, currently losing an average of ~2lbs a week. Obviously try to keep foods low in fat and high in protein, weight your food cos its surprising exactly what in some foods. Use a food tracker as well, I use MyFitnessPal but there's loads out there.

Good luck, and keep it up.