It's true. Burning fat is your bodies reaction to a caloric deficit in the absence of glycogen storages or carbs in general.

When you fast your glycogen gets depleted, 1g of glycogen binds 5g of water so you'll mostly lose water during the early stages of fasting and afterwards ketosis starts and breaks down your muscles and fat.

With a high caloric deficit the body will also start to break down muscles more than fat because it thinks you're running away from the British again and those pescy muscles will only use up more energy in the future so it is more efficient to get rid of them primarily instead of the fat too outlast the british.

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If you want to lose fat long term it is not a great method, you should strive for a medium to low but constant caloric deficit.

Intermittent fasting can be an alternative for you if you like fasting. In general all that counts for diets is that you have a caloric deficit but not to much to slow down metabolism.

I know we are all unhappy with our bodies sometimes and always look for quick and easy ways to achieve our goals but for losing weight naturally we haven't found one.

Maybe give the intermittent fasting a shot, works great after getting used to it and helped me to lose 15kg in a year after the lockdowns, also helped my godmother to go from big chonker to chubby.