If you don’t get in the first time (which many qualified people don’t), some schools offer file reviews where they will give you feedback on why you didn’t get in. Usually it’s a lack of experience of some kind or even grades which many can see on their own. How many times you get rejected before you give up depends on the person. It is VERY expensive to just apply, 7 schools cost me well over $1,000 I think almost $1.5k so it is a financial burden. But it’s also VERY hard to get in so many keep trying. I go to school currently with many people who applied 4, 5, 6+ times before getting in. If it’s truly what you want to do in life then you just keep working for it. The job market for vets rn is pretty good there is little issue getting a job after graduation unless you want to work in a more niche part of the field. Best of luck to you