I’m not able to get the posts to limit per page.
If I add the search_filter_id in the args array the posts_per_page arg is ignored?
Do I have to do anything else to enable this function?

<?php $posts_per_page = 2;
$args = [ 
    'orderby' => 'date',
    'post_type' => 'projects', 
    'posts_per_page' => 2,
    'search_filter_id' => 220
    ];
    $the_query = new WP_Query( $args );

?>

Furthermore I want to add a Load more option.
In other questions I can see that you are not supporting this. Is there any way to make this possible anyway with a custom code or plugin? Do you have any suggestions?

Thank you