If you are having to count calories and deliberately restrict calorie intake over a long period while taking GLP drugs for them to work, then they are not really working or at best maybe helping a bit. The reason I think it is a problem is that voluntary calorie restriction takes effort , and in general it is not really sustainable, basically turning the process back into a low calorie diet, which might work for a while but generally has poor long term success rates.
Th GLP drugs are meant to reduce appetite so you eat less and create a calorie deficit, without requiring willpower, this is basically why they work long term. And if they do not have that effect at decent doses, and the only way to lose weight is to deliberately restrict calories, then most likely you are one of the unfortunate 5-10% who respond poorly to them.
A lot of people use GLP drugs like a standard diet and exercise program, at low doses with poor hunger control, and deliberate calorie restriction, and set themselves up for a high risk of losing a lot less weight or putting it back on once tolerating the hunger gets too hard in the longer term. So when I see responses to people not losing weight or much weight on them that recommend calorie counting and more exercise as the solution, I tend to disagree, not that they are a bad idea as such, just that they do not really work for long term weight control, especially for those with more severe obesity.