Build a landing page to fill out a form

We are currently look to find easier ways to collect date from our prospect buyer and we finnaly decide on creating a landing page that collect basic information on the clients. We are real estate agent that sell and find camping for people. We prioritize a lot of our time on the prospects seller of camping so that we could get inscription to sell. On the others hands, we have to take care of potential buyers so that they would get hooked to buy one from us in a near future. Creating a landing page to collect basic information, would leads to have the opportunity to send them directly some listings we have in respond to their special needs. Therefore, we would collect the name, email adresse and phone number. At the same time, we would let them answer a questionnaire with scroll option to get their special needs. At the end of the page, we would like to include an confidentiality agreement for them to agree to before sending us their information on our email or in a excel sheet. We already have the look of our site since we are affiliated with an agency that already has their website. And we will have the text and logo for the site already done for the project. Let me know if your willing to work it with us! Thanks in advance !