Re: Not coping with the new sensei
I faced a situation many many yrs ago, at the first dojo I trained at, to stay or go based entirely on what would be termed character/trust issues. Fortunately I had other local options for training. But to stay or go was still a difficult internal process for me to grapple with.
I would not worry at all about the other students. They are not your responsibility. To discuss it with them could easily fall into the realm of gossip.
I encourage you to think about concrete issues and examples that make you uncomfortable that you can discuss privately with the sensei. If you feel you can't then you should leave.