Man, I gotta be real with you. You aren’t going to be able to crowd source this. There’s just too much outdated information, well meaning but flawed advice, and outright bullshit online. Finding the up to date, good answers among the junk would only be possible if you already knew it.
The only reliable way to get good answers about bariatrics is going to specialists. Seriously, you can’t even totally rely on a general practitioner to be caught up, though you might get lucky with an internist. You can make do with nutritionists if they’re either fairly newly graduated, or you know they keep up on their subject.
Hell, there’s some specialists that lag behind in terms of proper, evidence driven best practices.
And the thing nobody online will likely admit is that there isn’t a single, complete answer because part of how fat loss and gain works is governed by individual circumstances regarding hormones, metabolism, and capabilities, which still ignores external factors in making a prescribed weight loss plan work. If your broke ass lives in a food desert, and you’re limited to the corner store for the majority of your supplies, the task gets much harder, just as one example of what I mean by that.
Any medications you’re on, that’s got to be factored in to an overall plan, even OTC meds, supplements, etc.
Now, there are strategies that are fairly reliable in helping manage calorie intake, like going predominantly plant based. You’ll have to study up and make sure that whatever plan you set up has the whole gamut of nutrients you’ll need, but as long as a food desert isn’t in play, that’s usually easy enough. The good news about that is that the core foods tend to be very affordable, and easy to buy in bulk as long as you have storage space.
Another piece of good news is that if you’re using exercise as part of your overall plan, not only will you give yourself a wider space for intake, but it improves your health no matter what weight you’re at along the way. I mean, losing excess fat is great, but it isn’t going to magically make your cardiovascular system work at its best.
And, again, you can only take this comment with a grain of salt because you have no way of knowing that I’m up to date on the interrelated subjects to a degree high enough to be useful. For all you know, I’m thirty years behind on things. And, truth is that the general subject matter isn’t a high priority for my reading time. I do put a bit of time every week into digging through journals and publications with a focus on medical shit, but bariatrics isn’t something I’m into for my own curiosity. So I have to be at least a little behind as default because I’m always behind even on my favorite subjects because I can’t devote enough time to it all.
Weight management is something you have to take on as a long term project where you adapt along the way. You can’t look at it as weight loss either, because just losing excess fat is only part of the project. You have to keep it off and improve your overall health.