Before you read another sentence there's something you need to understand. You are not lazy. You attended school, hold down a job, and spend every day doing things that are challenging on some level. You have worked for most of your life and you'll continue to work until your body refuses to go on. There's nothing wrong with you for letting your body make its own decisions and getting yourself to a place where you hate looking in the mirror. You should not be ashamed.
The human body is an extremely complex set of instruments with more books on its inner workings than most of us could ever read; let alone understand. What's more, your body is unique in more ways than a simple set of finger prints. Taking control of it isn't nearly as hard as you think. It's just that until now there's no way you could know how. Looking, and more importantly, feeling the way you want doesn't have to involve cringy dieting and sinking half of your life into a gym.
Take control. Take the first step. Together we'll go on a journey that will rock your world. You don't need a gym membership to be the best version of yourself. The only things you need are a will to keep going and a guide to show you the path. Stop dreaming. Start earning what you're already working for every day. Earn control of your body. Earn your fitness.