Ending Keto Diet?

A.

So I'm interested in doing the keto diet for a month or so. I'm currently 5'5 and 136 lbs, I've always been around 120lbs (except when I was pregnant) and over the past 8 months I've gained 16 lbs so I wanted to try keto until I got around 123 lbs. What I was wondering is what happens after ending the keto diet? Like I want to be able to eat apples and fruits. I'll still maintain a good diet but not so restrictive with the carbs.