Save taxes on Selling a property!

Hello Finance experts!!

I need advice on how can I save money on taxes while selling a property.

I want to sell a property and invest it in another property near my family so it’s easy for me to handle the property.

Example scenario. The flat I want to purchase is 50L and the property I am selling is 40L. What do I do in terms of Loans and the cash at hand to save the most??

Thanks in Advance