Wordpress Pagination changes my template

I have a problem using pagination for terms in my custom taxonomy, let's call it Case-Studies. If i go to /insights/page/2, posts will be displayed correctly, and I can navigate between pages. The problem comes when accessing /insights/case-studies/page/2, which will actually show me the posts from /insights/page/2 ( the content gets redirected, and also, /insights/case-studies/page/2 will access archive-insights instead of taxonomy-insights. /insights/case-studies works fine, but when adding a pagination, all content shown will be actually the content from root (/insights/page/2)

I have Insights custom post type, defined here:

function create_insights_posttype() {
register_post_type(
    'insights',
    array(
        'label' = 'Insights',
        'labels'              = array(
            'name'          = __( 'Insights', 'x' ),
            'singular_name' = __( 'Insights', 'x' ),
            'search_items'  = __( 'Search Insights', 'x' ),
            'add_new_item'  = __( 'Add Insight', 'x' ),
            'edit_item'     = __( 'Edit Insight', 'x' ),
            'update_item'   = __( 'Update Insight', 'x' ),
            'new_item_name' = __( 'New Insight', 'x' ),
        ),
        'public'              = true,
        'has_archive'         = 'insights',
        'exclude_from_search' = true,
        'publicly_queryable'  = true,
        'menu_icon'           = 'dashicons-open-folder',
        'rewrite'             = array(
            'slug' = 'insights/%insights-category%',
            'with_front' = false,
        ),
        'show_in_rest'        = true,
        'supports'            = array(
            'title',
            'author',
            'excerpt',
            'editor',
            'thumbnail',
            'results',
            'page-attributes',
            'custom-fields',
            'revisions',
            'post-formats',
        ),
    )
);
}

add_action( 'init', 'create_insights_posttype' );

with custom taxonomy defined here

function insights_taxonomy() {
$labels = array(
    'name'                       = _x( 'Categories', 'taxonomy general name', 'x' ),
    'singular_name'              = _x( 'Category', 'taxonomy singular name', 'x' ),
    'search_items'               = __( 'Search categories', 'x' ),
    'popular_items'              = __( 'Popular categories', 'x' ),
    'all_items'                  = __( 'All categories', 'x' ),
    'parent_item'                = null,
    'parent_item_colon'          = null,
    'edit_item'                  = __( 'Edit category', 'x' ),
    'update_item'                = __( 'Update category', 'x' ),
    'add_new_item'               = __( 'Add New category', 'x' ),
    'new_item_name'              = __( 'New category', 'x' ),
    'separate_items_with_commas' = __( 'Separate category with commas', 'x' ),
    'add_or_remove_items'        = __( 'Add or remove categories', 'x' ),
    'choose_from_most_used'      = __( 'Choose from the most used categories', 'x' ),
    'menu_name'                  = __( 'Categories', 'x' ),
);

register_taxonomy(
    'insights-category',
    array( 'insights' ),
    array(
        'hierarchical'          = true,
        'rewrite'             = array(
            'slug' = 'insights',
            'with_front' = false,
        ),
        'labels'                = $labels,
        'show_ui'               = true,
        'show_in_rest'          = true,
        'show_admin_column'     = true,
        'update_count_callback' = '_update_post_term_count',
        'query_var'             = true,
        'publicly_queryable'    = true,
        'show_tagcloud'         = false,
    )
);

}

add_action( 'init', 'insights_taxonomy' );

In my functions, I defined a filter for %insights-category% :

function wpa_show_permalinks_insights( $post_link, $post ){
    if ( is_object( $post )  $post-post_type == 'insights' ){
        $terms = wp_get_object_terms( $post-ID, 'insights-category' );
        if( $terms ) {
            return str_replace( '%insights-category%' , $terms[0]-slug , $post_link );
        }
        else {
            return str_replace( '%insights-category%' , 'all' , $post_link );
        }

    }
    return $post_link;
}

add_filter( 'post_type_link', 'wpa_show_permalinks_insights', 1, 2 );

For taxonomy-insights, I defined a WP_QUERY that supports pagination, like here:

$paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;
$query = null;
$query = new \WP_Query( array(
    'post_type' = 'insights',
    'posts_per_page' = 2,
    'paged' = $paged,
    'tax_query'      = array(
        array(
            'taxonomy' = 'insights-category',
            'field'    = 'slug',
            'terms'    = 'case-studies',
        ),
    ),
) );