First and most important thing is that government/private sector should have willingness to work on this because it requires lots of money to work on any project.

Tell us the ways or things we can implement if we get a chance to plan a city , money is not an issue , we first need to have a plan for things

Yes, @divyansh you are right and I agree with you but I'm also not wrong take an example - You have a plan, an idea but you are lagging with team and money then even your idea will only become an idea and will never get implemented on land.