I am so sorry to hear that : (. You said that you maintained status quo but you also stated that you lost a lot of muscle so it is little bit contradictory but it is not important - the important fact is that you lost muscle : (.

To maintain muscle one really has to push them to work so perhaps resistance level that you used was not enough. Can you find personal trainer or ask to get referral for PT sessions where somebody will show you what you need to do ? Some weight training would be very beneficial as well as lot of exercising of a lower body with deep squats holding weights, bicycling with high resistance mode, Nordic Track machine etc. Some people however have physical limitations so having professional trainer help you would be probably very helpful. My husband exercises every day, perhaps you need to up the amount of exercise.

Also - you must have adequate amount of good quality protein in your daily food intake (chicken, fish , turkey) and added protein shake (whey protein or soy protein powder , no additives, gums, color or artificial aroma - please do not buy prepacked " Ensure" or similar).

Wrinkles- eat a lot of fresh fruits and veggies and take antioxidant vitamins and stay very hydrated. If you wrinkles are now mostly on your arms and legs, that is because you lost muscle mass : ( and you now have skin that is somewhat loose. As soon as you regain muscle wrinkles will be gone. Also skin has ability to "shrink" and adjust to new dimensions but it goes much slower with age. To help skin you need to stay very hydrated and also choose a body cream that you like (or any natural oil) and apply it every day.

Don't give up - this can definitely be improved , you just need proper nutritional and exercise program and perseverance 👍