i cant seem to loose weight

ive been on a diet since July now and ive only lost 5 kgs (SW: 80kgs) and i lost it during the first month but I also did keto during that month for a week and I lost 2kgs on that. but ever since then I cant seem to loose weight although im in a calorie deficit (I measure and track everything). I eat around 900 to 1200 calories a day and my maintenance calories are 1800 (im 5'3 and dont workout at all since I don't like it and my body cant handle it). I prioritise protein and im in a constant calorie deficit and ive only had 5 cheat days in total and even then I was under my maintenance so I should be losing weight but I am not for some reason and its really messing with my head. I ended keto on 3rd of August and since then I have not lost a single kg (I check my weight almost every morning before eating anything and after using the washroom). im 22 years old and a woman btw.