If you can't work efficiently in these conditions and can't fix anything, either because they don't let you or because you don't have the abilities, then you sh

If you can't work efficiently in these conditions and can't fix anything, either because they don't let you or because you don't have the abilities, then you should leave, for yourself, for the company, and hopefully, for your next job. I see two possible outcomes for your project: either they manage to hire (hopefully very well paid) people with the necessary skills and authority to clear that mess, or everyone competent will leave and only the most desperate will stay, and it will be terrible. If you are not a respected project savior and if you are competent and not desperate, then your place is elsewhere.