Need a Custom CRM for Loan and Credit Card DSA

We need Custom CRM software for Loan and Credit Card DSA business where unlimited users are required there will be multiple user categories like brokers, partners, sales, telecallers, and admins. The CRM will be used to create leads for loans and credit card products by the users. And the admins or the backend team will view the data to process through our partner bank's portals. Here is our current CRM - https://capitalcow.org We will give you access to the same to understand the features. Our budget is Rs.3k to Rs.5k