Choosing One Financial Institution Over Other Ones

Hi! I would appreciate any help in advance! The question we like to answer is:

why consumers choose one financial institution over another for mortgage loans. Factors to consider include interest rates, fees, reputation, trust, loan terms, customer service, approval speed, product offerings, convenience, recommendations, financial stability, and special offers.

Therefore I need datasets that explicitly have consumers side, whether or not choosing one institution. One I found interesting is HDMA datasets that has one class of applicants who are approved for a loan but did not accepted the loan. It’s interesting, but has not much new to say or significantly different factors than other ones like those who accepted the loan or got denied. I was wondering if there are other datasets that might have consumers side of view showing factors that impact consumers decisions? Anything that might expand my perspective, basically. Thanks!