((((PFM))))
That is a lot to deal with when you are working so hard to deal with your own needs.

This probably isn't easy - but could you try to do some self-talk - keeping at the front of your mind that the nastiness from the guests really is not your fault? (Because it isn't)! How they behave is truly their issue/problem. Sometimes the best defense is just to empathize with them. You don't have to apologize - you just let them know that you understand they have been inconvenienced and you will do your best to find solutions or someone who can assist them.

As far as employees who are harassing you - stand up for yourself and in a firm, gentle voice let them know that their behavior is unacceptable. Tell them you expect it to stop and let them know that you will call the police if it continues.

In the meantime, I do hope you are actively looking for different work. At a certain point, our mental health is more important than anything else.

Wishing you the best.