Design Web application with spring-mvc, how to choose data, model objects & ui objects?

I built a web application using spring-boot, spring-mvc and hibernate. I used the DAO in UI directly by just wrapping them in another objects. It makes my DAL and Presentation layer quite tightly coupled.

As per my understanding, mvc architecture reduces coupling by separating out each component and i worked against that. :(

Is it okay to do what i did? As it saves presentation layer object conversion to DAO to persist them in DB. What is recommended and best way to design? what will the pay-off with current design (quite tightly coupled)?

I'm not able to figure out, could anyone please help me to understand it.

Thanks in advance!!