I would suggest you research Healthy KETO and IF (Intermittent Fasting). This lifestyle has grown very popular because it works very well. If your serious, you can lose a lot of weight, fix metabolic disorders, and get very healthy quickly regardless of age. Search the following on Youtube, Dr Berg and SnakeDiet. The guy who runs the Snakediet channel is quite the character but his intentions are to motivate and get you healthy.
Lost approx. 100lbs over the last year or so without a lot of effort or exercise.
Good Luck.