How to send email from wordpress php?

I have a problem sending an email from a contact page form in Wordpress.

This is the form:

<?php
  /*
  Template Name: Contact
  */
  ?>
<?php get_header();?>
<div class="container-fluid main-content content-color">
  <div class="row justify-content-center">
    <div class="col-xs-12 col-sm-12 col-md-12 col-lg-12 pb-5">
      <!--Form with header-->
      <form action="" method="post">
        <div class="card border-primary rounded-0">
          <div class="card-header p-0">
            <div class="bg-info text-white text-center py-2">
              <h3><i class="fa fa-envelope"></i> Contactanos</h3>
              <p class="m-0">Con gusto te ayudaremos</p>
            </div>
          </div>
          <div class="card-body p-3">
            <!--Body-->
            <div class="form-group">
              <div class="input-group mb-2">
                <div class="input-group-prepend">
                  <div class="input-group-text"><i class="fa fa-user text-info"></i></div>
                </div>
                <input type="text" class="form-control" id="nombre" name="nombre" placeholder="Nombre y Apellido" required>
              </div>
            </div>
            <div class="form-group">
              <div class="input-group mb-2">
                <div class="input-group-prepend">
                  <div class="input-group-text"><i class="fa fa-envelope text-info"></i></div>
                </div>
                <input type="email" class="form-control" id="nombre" name="email" placeholder="ejemplo@gmail.com" required>
              </div>
            </div>
            <div class="form-group">
              <div class="input-group mb-2">
                <div class="input-group-prepend">
                  <div class="input-group-text"><i class="fa fa-comment text-info"></i></div>
                </div>
                <textarea class="form-control" placeholder="Envianos tu Mensaje" required name="msj"></textarea>
              </div>
            </div>
            <div class="text-center">
              <input type="submit"  value="Enviar" class="btn btn-info btn-block rounded-0 py-2">
            </div>
          </div>
        </div>
      </form>
      <!--Form with header-->
    </div>
  </div>
</div>
<?php get_footer(); ?>

Is it possible to send an email to a static email by pressing the send button? I tried using JavaScript, but it doesn't send anything and I don't understand the function that Wordpress has wp_email() since whenever I call it it shows this error:

"Uncaught Error: Call to undefined function wp_mail () "