Lots of good advice here. I just wanted to revisit your question about loose skin.

It happens, of course, when you lose subcutaneous fat. That's a good thing! Depending on how much the skin was stretched, and also your age, the skin may shrink over time. You might check out some techniques for improving the blood circulation in the surface. Skin brushing, loofah, massage, etc. However, filling out the skin with muscle is probably not going to work for most women.

The dimply stuff is a genetic trait. In spite of the many proposed cures for "cellulite" there's no changing it. Even skinny people have it. Not your fault!

Stay hydrated. Don't overdo the exercise. Eat real food. Enjoy your life.