Where to conduct surveys and collect requirements?

Question

Startups

For example, there are ideas for the project, most of the requirements for it are described, tools are prepared and the most necessary knowledge is obtained.
Everything seems to be going quite smoothly, although not rapidly. There are things that are done primarily for the user and I can't finally decide how this or that function should look or work. For example, most often it concerns the GUI. Taste and color..
If everything can be decided with the overall design, then in order to determine where which elements are best placed, you need to think and draw a conclusion based not only on your opinion.
Since there are no such people (who are interested in at least choosing one of the best, in their opinion, prototype from several proposed ones), where can they be found without investments? Spamming is definitely not an option. Promoting a VK group is too long ..
Are there suitable resources?

Answer 1

As for the GUI - it's generally pointless to ask the user. You just need to see how it works. Well-tuned analytics provides more useful information than a survey. And orders of magnitude more than polls in such a disastrous place as social. networks.
Therefore, the best option is to launch the easiest and fastest option in production, and then finish it based on analytics. Otherwise, while you are arguing "how to do it better", someone will do it 10 times already, earn money and close the need of users.

Answer 2

Do you want to test for a new product, how best? Well, your designer should have an opinion on this matter, listen to him and that's it.
And if the product is ready and you want the opinions of existing users on new things, then write letters to them and ask them to speak.