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.
Investment risk is indeed big but there are definitely ways to handle and reduce that risk, so far the way to handle it is by doing research on the invested project and doing calculations on existing data to find guesses that can be considered when investing