Load Template From WordPress Plugin

Load-Template-From-WordPress-Plugin.php

<?php

function km_include_gym_dashboard_page_template( $template ) {

	if ( is_page( 'gym-dashboard' )  ) {
		return plugin_dir_path( __FILE__ ) . 'templates/content-gym-dashboard.php';
	}

	return $template;
}
add_filter( 'template_include', 'km_include_gym_dashboard_page_template', 99 );