Mine may not be the kind of advice you are looking for, but it may be valid for many people.
I have struggled with obesity and weight loss since my teens. For most of my adult life, I have yo-yoed between losing weight rapidly and then gaining it back. Something I learned over the years is not to get rid of your large or small clothes as your weight goes up and down. Hold onto a spectrum so you don't have to buy new wardrobes as often and always have something to wear.
I also learned that rapid weight loss in a short period of time invariably always resulted in me going into an emotional and physical funk shortly after. It works for some people. For my mental and physical health, I have to focus on slower weight loss.
Finally, I have stopped caring about weight and appearance. They are not the best markers of fitness and do not account for various genetics and body types. I like to focus on vitals (blood pressure, blood sugar, and cholesterol) + the ability to walk or bike 30 minutes at a steady pace without tiring or aching. I eat/work out to keep my vitals in good range and be able to do 30 minutes of moderate exercise with ease rather than lose weight.
20