Number of features built vs number of features used

As builders and founders, we all go through this phase of continuously adding features without understanding proper customer needs.

We tend to build too many features in a loop assuming users would pay/upgrade for that one feature.

In reality, the driving factor for users/customers could be completely different.

It's tough to navigate through this if feedback loops are not in place.

What are some methods and tools you think are right to establish the right feedback loops at the early stage of the building?