Hook on order-received thank you page

Hello!
I am trying to add a back to shop button on thank you page...

I found this solution that works

add_action( 'woocommerce_thankyou', 'bbloomer_add_content_thankyou' );
 
function bbloomer_add_content_thankyou() {
echo '<a class="rbs button" href="https://sofianos-orthopedika.gr/">Πίσω στο κατάστημα</a>';
}

but i am wondering if there is a hook on gp that would do the job so i wont overload my functions.php file