Regarding pre-approved home loan

I am considering applying for a pre-approved home loan with ICICI Bank for an amount of INR 39,00,000 with a tenure of 30 years at a fixed interest rate of 10%. I would like your guidance on whether this is an optimal option based on current market conditions and if any alternatives might offer more favorable terms. Additionally, I am currently not employed, as this loan will be facilitated primarily to support my father, who is a government employee and will be responsible for the repayments. Could you please advise on any specific documentation or income proofs required in this context, particularly regarding payslips or similar financial documents?