Faisal, I think that what others are trying to tell you is that for the more specific questions like "What past project is most like this?" no one can really give you guidance, because we aren't familiar with your work history or the details of the job.
If you do have the relevant experience and are qualified for the job, don't worry so much about the right way to answer these questions. Just tell the truth. DO answer them, though, and not just in a few words, because they are the first thing the client sees when screening proposals.
But, I have to second what a previous poster said about experience. Freelancing is not the place to go after a job where you have 70% experience. You can do that in the brick and mortar world where you'll be working in a physicla location with other people who know how to do the job and are invested in training you for the long haul, but that is not how freelancing works. A freelancing client is looking for someone who can simply take the project and run with it. They don't want to pay you to practice on work that is important to their business.
I'm sorry if that sounds harsh--we all have to start somewhere and get experience. But, Upwork isn't the place to do it. Most of us who are successful here have had years of experience in our fields and bid only on jobs we are entirely confident we can do well with our existing skills and knowledge. Since there is so much competition, it is unlikely that you will get hired if you don't already have all of the skills necessary to complete the project, and if you did it would probably lead to negative ratings that would hurt your chances of getting future jobs.
You really should focus your bids only on those jobs you have all of the necessary skills and experience for.
