Insert address in my website form and return the address position on the map automatically

Question

Hello, I’m with a map, google maps, that marks positions of various places. In a general way I would like that, when entering the address in the form of my site, the location is marked on the map without having to drag the position on the map, automate the positioning on the map.

<div class="col-md-12">
  <script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBUMKHFlfDJ5cOq4ZqnaTtwaV99_zcLUSY&callback=initMap"></script>
    <script>
      function initMap() {
      var myLatLng = { lat: <%= @unit.coordinates[:latitude] %>, lng: <%= @unit.coordinates[:longitude] %> };

      var map = new google.maps.Map(document.getElementById('map'), {
                center: myLatLng,
                scrollwheel: false,
                zoom: 15
              });

      var marker = new google.maps.Marker({
                map: map,
                position: myLatLng
              });
            };
    </script>
          <div id="map" style="width: 100%; height: 200px; margin-bottom: 10px;"></div>
 </div>   

This map allows you to drag the point to where I want but I want that when entering the address in the form it positions the point on the map referring to the address.

Grateful for the attention!