I remeber Gamasutra (game dev news site) having a regular Post Mortem column, where developers who had shipped a game would write about what worked and what didn't during development and launch of the game.
Even though I wasn't a game dev I really enjoyed reading these, as most contained info applicable to other teams as well.
I used to love reading Post Mortems back in the early 2000s. Maybe it's nostalgia lenses but the problems and obstacles just felt so much more relatable and interesting. Now it's all market dynamics and marketing and tortured business mechanics and layers of artificial tech complexity. It's more depressing to read than motivating.
Even though I wasn't a game dev I really enjoyed reading these, as most contained info applicable to other teams as well.
edit: Oh wow, I had assumed they had gone the way of the Dodo after being bought way back, but seems they're still going: https://www.gamedeveloper.com/search?q=post%20mortem