As solo entrepreneur, you deal with uncertainties:
What I propose is to form a small group of people and have 2 by 2 video calls for 30 - 60 minutes (Skype, Zoom, Google Meet?).
In the first half, one person gives feedback on the other person website, product, marketing strategy. In the other half, the roles are reversed.
Hopefully if something is wrong, after 4/5 calls, you will see a pattern.
If you're interested to join, reply in the comments with email or Twitter handle, website, time zone, preferred video chat app. I'll try to form small groups of 5 people.
Anthony @Japplis Ant Commander Pro CET Google Meet / Zoom