I can explain why if you like.
I found that I was a slow loser on Wegovy and stopped within a few kg of my goal weight, which should have been slightly lower to get me into a healthy BMI but I did not want to stay on the WLI due to fatigue and tiredness.
The first six months I managed to keep the weight off, but I found in the second half of the year, when the inevitable stress hit, that my weight did start to creep up again.
I wish I'd had a better 'cushion' from which to start.
I have currently regained half of what I lost- which was not a huge amount, over 5kg, but enough that I'm annoyed about it.
I am currently back on dieting/calorie counting without the WLI.
I'm happy that I'm at a lower weight than before, and losing that 5-6kg has stayed off, I'm not so happy I didn't manage to keep it all off, but I am being kind to myself and understanding that unfortunately my body was 'happier' at the slightly higher weight.
As to why I don't constantly live on a calorie controlled diet, I would have thought that was obvious- you only need a couple of dinners out with friends, night out with partner and Christmas. I wasn't drastically over-eating, but the level of calorie restriction needed to lose is quite high, and I couldn't keep that up indefintely.
I hope by being honest, and realistic, this helps someone else. The key thing I would do, if I didn't struggle so much on the jabs, is leap in if I put on more than 2kg, and restart them.
I am happy I took them though, otherwise likely I would be the same weight as before, or even higher.