Q$1$: How do you define a successful project? Please give some details and examples

Q$2$: When is a project considered a failure? Please give some details and examples $.$

Q$3$: What are all the reasons behind the failure of a project? Please give some details.

Q$4$: what are the expectations of the top management and the team of $($ from$)$ the project manager

Q$5$: what a realistic project is all about? please explain