First off, I am no expert, but I have been down this road in the past and have learned some things that have worked for me.
There's no secret. If you want to lose weight, calories in has to be less than calories out. How you get there is the challenge.
In a non-scientific summary, Ozempic basically makes you want to eat less. This can certainly create a calorie deficit and help you to lose weight. However, early studies show that most people will pack weight back on because they never correct the underlying problem... lack of exercise, eating too much, eating poorly, etc...
Unless you have a supernatural metabolism, losing weight starts with diet. Which diet you choose is up to you... low carb, protein rich, low fat, etc... Find something that you can follow and stick with it. After that, it's activity (you have to burn those calories somehow). Start with walking, progress to incline walking or hills, progress to running, add in weights. Keep track of calories and the weight will start coming off.
Also, two other very important factors... water and sleep. I can not stress how important it is to stay hydrated and how important it is to get good sleep. Skimp on these and the results from above slow considerably.