Hey @Sunshine59. Good for you for tackling addiction and striving for a life free of the awful expense and health issues.
Regarding "workouts" that you mentioned: This may, at first thought, seem off the topic, but it really isn't. I heard that Queen Elizabeth II (current queen, of course) is very fit for a woman of 95 years. She doesn't work out and I wondered how that could be. I began watching videos on the science behind being fit and losing weight. Patching some of them together, a person can be reasonably fit (as is the gracious Queen) by getting out and walking briskly for 30 minutes a day, three times a week! Of course you can do more, but really, 30 minutes a day three times a week is pretty doable.
And then there is the will to do it. Ah, well, it does take some inner motivation, I know. The other advantage of those three days a week is that it helps with staying smart, being able to learn better.
Best of luck. You can do this. I think everyone can do this when they find their reason, develop a desire to truly be their best person. For me, it was Covid. Before it hit the USA, I remembered a presentation I attended where an epidemiologist presented a slide of how a pandemic would start and spread. When Covid was still in China, but spreading, I knew it was heading to the USA. I also knew that I'd likely succumb to fulminate lung failure as a smoker, if I got Covid. so I quit. A week later, Covid showed up about 15 miles north of me, in Kirkland, Washington.
Finding your reason--that's the key.