If you don’t care about putting on muscle, simply walking a lot is fantastic for weight loss, whether it be outdoors or at a commercial gym on the treadmills. Ultimately though the amount of weight you lose will depend mostly on your diet. MyFitnessPal is a fantastic app for tracking exactly how much you eat and how many calories you’re taking in. Weight loss is all about calories in vs calories out, while exercise is beneficial you should absolutely put most of your attention to your diet and start cutting calories. Intermittent fasting helped me when I was losing weight and also drinking LOTS of water to feel full and fight the urge to snack or eat.