The results are a bit different on my side. I've been doing intermittent fasting (23:1) since 2019 (~6 years). During this period, I did IF (46:2) for a year (one meal every two days).
I have never been overweight in my life but I lost ~10 kg in the first year and my weight has remained stable since then. I haven't measured it, but my body fat percentage is probably around 15%.
By the way I do moderate exercise every days. Walking at very slow speed for 3-4 hours or swimming for an hour. My muscle mass is always increasing, albeit slowly.