Comparing Keto to GLP-1 is apples and oranges, one is pure willpower, the other is metabolic help. Don't stress the workout routine, just walk more.

The reason most people fail isn't the exercise, it's the hunger, especially after years of being "chubby". If you need that metabolic tool, you also need good info. I looked into Minimal when I switched, they do the affordable compounded option and have a whole resource section about diet and the science that I found super helpful.