Are there ways to have a software prototype tested by a large sample of potential users, in order to generate feedback, suggestions, problems etc?

I have a software product in alpha/beta stage. I want to test the current minimum viable product. I want the prototype to be tested by a large sample size, so I can gain feedback, suggestions, find problems, and build on my current prototype. My goal is to achieve maximum product - market fit, and pivot if necessary. What are the challenges to doing this and are there any services currently available ?