Whoa! If you are having difficulties with a lot of these jobs then you're in for a really long ride. As a new graduate, you sometimes are stuck with jobs that you may not particularly like, but they are jobs that the seasoned and experienced nurses do not want to do, but they need to be done. You will eventually work your way up the ladder where you can dictate to other nurses what they are supposed to do, but when you're a brand new nurse, you need to do what they would like you to do.
Sometimes they don't give you CNA's or LPN's to begin with. Sometimes they want to see how you're able to think on your OWN two feet before you are given any assistants. When you are completely comfortable at handling these tasks, you will be able to handle delegating duties to assistants. I don't find that any of these duties such as taking vital signs, changing linen, bathing patients and passing meal trays as such a big deal.
When I was in the hospital that I was in when I had an infection on my leg, yah sure there were a few LPN's that were there, but most time there were only Registered Nurses that were working on the floor that I was on. Most of the times they were scrambling around doing all of what you were saying plus dispensing medications and other things. Yeah sure they were busy, but they got everything completed, and they made sure that the patients were taken care of.
The nurses will also triage and see which cases need the most attention, and which ones can hold on for a little while. Fortunately when I had my infection and was in the hospital, I could bathe, go to the washroom on my own and feed myself, so this took a lot of the pressure off of the nurses that had to look after patients that couldn't do their own stuff. This is sometimes what you have to do as a nurse, is to have to prioritize your patients according to their needs, and then go along with this.
I thought that I would use myself as an example so that you would be able to see the whole scenario.
I wish you good luck, and I know that you will be a good nurse! Just keep your chin up, and do some waiting!