How effective are the obesity injections?

I'm curious about the effectiveness of weight loss injections. I'm really stressed about my weight these days. In my early 20s, I used to eat late-night snacks, but I could get back to normal quickly the next day with just a little bit of moderation. Now, however, the weight just won't come off like it used to. As I prepare for job interviews, I spend more time sitting and my lifestyle has become a mess, causing my weight to keep rising. I started exercising and following a diet, but the changes are much slower than I expected. That's why I've been looking into weight loss injections lately. What I'm most curious about is, of course, the effectiveness of these injections. The advertisements make it seem like you lose weight quickly, but I've heard that results vary greatly from person to person, so it's hard to make a decision right away. Since I'm still young and this is my first time looking into this, I'm wondering what criteria I should use to choose a clinic, rather than just focusing on the injection's effectiveness. If anyone of a similar age has had a consultation for the first time, could you tell me what specific questions you asked?