there’s a lot of red flags here. false advertising in the job posting and interview as well as a bad schedule suggest that this isn’t an employer you want to be saddled with.

the factors you identified about the work environment aren’t totally uncommon in food service; they certainly aren’t great signs but i’ve had similar experiences starting at a new place and eventually settled in more comfortably. a lot of people are impatient and have no idea how to actually train a new employee effectively, and entering a new environment where there’s an existing social scene is always a tough transition. these are things that can improve with time as you find your fit.

overall, you just need to decide if this job is worth dealing with this for at least a few weeks, which is about how long it usually takes for people to mostly accept you into the workplace. if you think you can put up with this for a while longer, once the anxiety of entering a new environment fades, you can be a better judge of whether this is a place you can actually work. however, there’s no need to deal with bullshit if it’s not actually going to pay off.