hi there! first of all, moving out affects everybody differently so don’t worry at all. there’s not necessarily anything you can do to “prepare” but if money is a concern, you can always start saving now with summer and weekend jobs etc.
uni housing can be expensive yes and most people’s loans barely cover it. loans are dependent on how much your parents earn - the more they earn, the less you receive. which is a very unfair system. lots of people i know have jobs to support themselves at uni. housing in second year is definitely cheaper than halls in my experience.
when you say “quick fix”, this does make me wonder - do you want to move out or do you want to go to uni? of course uni means more often than not moving out, but be sure you want to move out BECAUSE of uni rather than just moving out because you want to move out before you make any decisions.
i’m not entirely sure what you mean by financial aid. lots of unis offer hardship funds in case you encounter financial difficulty throughout the year. some also offer grants and bursaries for people from low income backgrounds.
and sometimes things being too simple can simply mean they are simple. it’s second year when you’re looking for a house when things get tough and more confusing. there isn’t a catch - just that you’re putting yourself in debt.
also some accommodation isn’t year round. most contracts are 40 weeks, meaning you’ll be home for summer and most students come home for holidays.
anyway wishing you luck! just make sure moving out to uni rather than moving out on its own is something you want 🙂