I started intermittent fasting about a month ago and I am pretty happy with it.
I am not eating keto, although I add a little coconut oil to my coffee in the morning. I may try a month of keto at some point but for now my focus is on increasing vegetable intake.
I find intermittent fasting with an 8-hour window I can eat pretty much whatever and not gain weight. So super useful for staying healthy. I have also tried water fasting, but that is actually hard, works well, but not remotely easy.