How much important we should give for design when we create a new product ?

It is very important to pay enough attention to the design. There is a concept of User-Centered Design. This is a design approach that places the needs, preferences, and behaviors of users at the core of product development. It involves a deep understanding of users through research and feedback, with the aim of creating products that are intuitive, useful, and delightful for the end-users. You can read more here: https://jetsoftpro.com/blog/the-...

Design's a big deal, no two ways about it. Think of it as the first impression—users judge your app or site in seconds based on how it looks and feels.