Do I miss some options

In WordPress ?? I’m using the WordPress dashicons font in Administration only as far as i can remember.

A OK, thanks.
Why not use them at frontend as “solved” green and “not solved” red icons ?
dashicons-yes

// Load WP Dashicons at the front
add_action( 'wp_enqueue_scripts', 'themename_scripts' );
function themename_scripts() {
    wp_enqueue_style( 'themename-style', get_stylesheet_uri(), array( 'dashicons' ), '1.0' );
}