Your older sibling – and your parents – are in debt to the college that you’re hoping to attend. Find out whether this will impact your chances of admission: https://www.collegeconfidential.com/articles/will-older-siblings-college-debt-affect-current-applicants-outcomes/
I don’t open any links posted on this site…but I will comment on the thread title.
Family debt for others will affect how a current college wannabe can pay for college. While that might not affect admissions, it surely will affect cash flow.
IIRC, there is no line on the FAFSA or Profile for any kind of family consumer debt…so how would the colleges even know you have a lot of college loans for others?
ETA…if parents or siblings withdrew from a specific college with a debt to that COLLEGE, then certainly the college will know…and one would think the college would be very reluctant to admit another family member who might end up owing them…money.