Need help with my first try to get feedback for a product configurator

I designed and programmed a bit complex product configurator for a shop in the recent month and I am now at a stage where I think it would be valuable to get feedback from acquaintances, family, and friends.

At first, I thought I will send them only a link and ask them for feedback but after some thoughts, I came to the understanding that what I would get back would be only some unquantifiable rambling.

So I hope that some people here in the great r/web_design community can help me out and tell what would be the best approach so that I get good feedback but do not annoy the people with a long catalog of specific questions :D.

Thank you for your time.