That's just a classic case of toxic management. They never take accountability, so everything becomes someone else's fault. Honestly, if they are treating you like this by day five, imagine how miserable it will be in a year. Don't fall into the trap of thinking better performance will please them, they'll just move the goalposts and find something new to blame you for. It is absolutely not worth the stress, and I can see how much this is wearing you down. Let them be disappointed. Just use this time to keep learning, protect your peace, and keep looking for a better job.

It is a poor manager who does not recognize it takes a while to settle in.

If you were a star employee you'd get shit like this from your co workers.

sounds strange. if you dont know what it is that is expected of you then thats managements fault.