Since it is about survey and questionnaire, much better if you will prepare a set of questions for every people who you want to ask some questions for your project.
You can use
Google Form for that or
TypeformIf that is really helpful for the community, a lot of people will help you, just make your set of questions ready and on-the-point questions. No need to PM you first, your target audience should not do the first move, you should do the first move to gather your data.