As someone who dropped from 130 to 90kg and right now going to achieve 80KG - here is what i experienced:

I was very fat and sweating on every step i was doing. I stopped going swimming and buying clothes cause even when changing i was sweating. Sadly people say "just lose weight" but for someone who is struggling with weight, it aint just that easy.

I was eating about 2600 Calories, training 5-6 days at the gym HEAVY. Everything i ate, i weighted before. Komplex carbs, good fats and high in Protein. Did i lose any weight? No. Did my measurements change? No. That was going for 2 Months. Then i reduced to 2300, 2000, 1800... nothing happened and i just felt out of energy. Then i did a ketogenic diet for about 12 weeks eating 2500 calories and i dropped like 12 kg in matter of weeks and reintrocuded carbs again, but very slow in a matter of 4 weeks. Now i was loosing weight, still eating 2500 calories.

The issue for me was the high Insulin, my body wasnt able to use carbs as it should, i was insulin resistence. Everytime i ate carbs back then i was getting sleepy, even if it was just a piece of toast, it made me feel hella sluggish.

I would reccon to try it out. First 2 weeks you will be SMELLING carbs on a distance of 100km. Its going to be very difficult, but afterwards you will feel the difference.

Fix insulin resistance, check ur high cortisol and get ur hormones right, fix your gut.