Anxiety

My anxiety have been through the roof lately and it's crushing me. I am a single mum to a 3yo just started working and I'm studying. I work as an agency PCA and it's work but it gives me so much anxiety, going to a new place with different routines every shift is really hard. Most of the people I work with treat me like an idiot when I ask questions and what not, I know what I'm doing but just different routines and not knowing what the residents like makes it hard. I'm worried I'm never going to fully get it and this stresses me out even more. I'm studying to become a nurse so I'm worried that not being the best PCA will mean I won't be the best nurse either. Work isn't the only thing causing me anxiety. Financial stress trying to pay for everything and stay afloat when paying a ridiculous amount of rent it just sucks. Then there is just general life, I went from living with people till the end of last year to living with just me and my daughter. We are busy literally every day during the week and trying to stay on top of everything is so difficult. I want to be happy with my life but it seems so exhausting. To top it all off I lost my step dad the end of last year completely unexpectedly and I'm still struggling with it, it wasn't supposed to happen and not how I expected life to go. Everything at the moment seems to just be pure shit. I want to enjoy life and I want to be present and happy for my daughter but I just can't. Can anyone please help or something I'm desperate.