Indeed we must learn from these mistakes. Whatever comments we make on the project do not really affect much, they are gone and what we can only take is the mistakes we make. In the future, surely we do not want to promote a project that is not so good.
So when we want to join a project, a good analysis is needed, so we don't regret it in the future because we chose the wrong project, because all the mistakes we make, obviously we ourselves must bear the risk.