Hey, the game might not be perfect, but it was playable and you learned from the experience. I’d call that a successful entry!
I agree with every one of your takeaways. They not only hold true for jam games, but longer projects, too, so I hope you carry those lessons with you into your future projects.
Mapping is a skill unto itself and is even more challenging when trying to adhere to the randomness principle of roguelites, so your struggles there are understandable. Given your skill level and the time you had to make the game I’d say you did alright.
Thanks for sharing your experience of making this game!