Hi Rajat,
I'd refer you to the mendix learning pages, but that has been done a lot already, without effect.
Use xpath restricting your data or a microflow to retrieve your specific entity.
Hi Rajat,
https://gettingstarted.mendixcloud.com/link/module
This link goes to the mendix academy to which people have been referring you containing learning pages and will explain basic microflow, page, container and such actions step by step. I recommend going through some of them since this will give you a better idea of how to handle basic stuff