Bring it back to something relevant another two people said. A simpler recovery craft can survive some pretty insane re-entries. You should be able to make a pod that can re-enter after direct transfer from the mun.
However I keep thinking it over and there are definitely a lot of creative ways to break even the best re-entry craft, if you come back home with more velocity than you should, if your trajectory is straight down instead of around back, even a tiny pod with a heat shield could explode.
What might help a lot here is if you shared a savefile. I am thinking the most useful savefile is after flying by the mun, after doing a burn to set up your trajectory toward kerbin. That way we can see how you're setting up your return.
Please remember there are a lot of engineers on here, and there are also a lot of people on here for whom english was not their 1st language.