Fasting works for some, not for others. I tried fasting and couldn’t handle it. I also ate way too much after the fast.
I’ve been on keto for over 3 years. The first year was easy. Then my weight loss stalled, and now I’m struggling with hunger and starting to regain. I don’t know what the solution is.
(The object is to get your body's insulin under control.)
There is also a sort of a "keto-plus" plan, called the "carnivore diet", where they only eat fatty meat (like ribeye steaks), but they eat sufficient amounts that they don't seem to get overly hungry from doing that.
I don't know if any of those would be helpful for you, but you might want to look into them.
Or get a qualified experienced trainer to walk you through about a dozen different weightlifting exercises with good form and start lifting 3x / week.