You can filter your results by the user's location. This involves setting the aroundLatLngViaIP parameter to true as part of your frontend implementation. The aroundLatLngViaIP parameter allows you to search for results around a location based on the user's IP address. You can find more information about the aroundLatLngViaIP parameter in our API documentation here.
Our documentation has a few examples of how to add this parameter to your implementation here.
If you'd like more information regarding geo-searching, you can check out our Geo location documentation.