As a thought too maybe try part loan/full loan for a few years so you still have a horse in your life. Usually 25-35 per week (some ask for farrier contributions every 6 weeks) dependant on days/person and you do daily jobs and ride. Owner is responsible for everything else cost wise but if you take note on those costs maybe you can piece together the affordability at a later date.
I bought a horse in my early 20s but I was not a student and had more than one job. Even then I needed a loan and a credit card because I wanted to take my horse out hunting & competing most weekends. Back then, the cost of everything was FA compared to what it is now. Feed alone has shot up by £4 a sack in the last few months.
Are you 12 years old?
You don't sound like someone mature enough to take responsibility for a large ,.expensive animal.
Anyone thinking of using a student loan to buy a horse let alone not having any means of covering ongoing costs needs to do some serious growing up.
Student loans are quite complex things to be fair to OP but here's the basics:
1) You don't get it all in one go, it's in three installments
2) You only get the maximum if your parents earn under a certain amount (this maximum is probably not enough, even if you got it all in one go, to cover buying and upkeeping a horse as well as paying for your rent and upkeeping yourself). It's important to remember that if you ARE getting the maximum loan then that's because your parents cannot help with your rent/upkeep to allow you to use a student loan to have a horse.
3) The loan to pay the tuition is payed automatically to the university unless you choose to opt out and pay it yourself, in which case you do not receive this loan.
4) It's a loan that you have to pay back if you earn over a certain amount in the future.