Education loan rejected 3 times what to do now

I really need genuine advice/help regarding my education loan situation for the UK.

I had applied for the January intake earlier and my loan was approved by Avanse, but due to family issues I couldn’t go at that time. Now I reapplied for the September intake and my loan got rejected because of my co-applicant’s age.

I lost my father 2 years ago, so I only have my mother and she is a housewife with no ITR. I am currently working full-time. My grandfather is my co-applicant, he is 60 years old, runs a construction business, has around ₹7–7.5L ITR, and has never taken any loan before.

I genuinely don’t have any other family member who can support me as a co-applicant. I already got rejected by Poonawalla and Credila earlier for the same age issue, and now this Avanse rejection too. I feel these 3 rejections have made things even harder.

My course is MSc Data Analytics at LMU. My academics are decent, no backlogs ever, and I also have 2 years of work experience.

If anyone has faced something similar or knows any NBFC/bank/solution that might still work in my case, please guide me. I would genuinely appreciate any help.