I know we still have issues with buddyboss and displaying circle data properly. Attached is unfinished code that maybe you can use to accomplish this. Please let me know.

function display_user_circles_and_activities_shortcode() {
    ob_start();
    
    // Check if the user is logged in
    if (is_user_logged_in()) {
        $user_id = get_current_user_id();

        // Get the user's circles
        $user_circles = bcircles_get_user_circles($user_id);
        
        if (!empty($user_circles)) {
            // Output a dropdown to select a circle
            echo '<form method="get">';
            echo '<label for="circle-select">Select a Circle:</label>';
            echo '<select id="circle-select" name="circle-id">';
            
            foreach ($user_circles as $circle_id) {
                $circle = bcircles_get_circle($circle_id);
                // Display circle names in the dropdown
                echo '<option value="' . esc_attr($circle_id) . '">' . esc_html($circle->label) . '</option>';
            }
            
            echo '</select>';
            echo '<input type="submit" value="Show Circle Activities">';
            echo '</form>';
            
            // Check if a circle is selected
            if (isset($_GET['circle-id']) && is_numeric($_GET['circle-id'])) {
                $selected_circle_id = intval($_GET['circle-id']);
                $selected_circle = bcircles_get_circle($selected_circle_id);
                
                if ($selected_circle) {
                    // Display circle activities
                    echo '<h2>Circle Activities: ' . esc_html($selected_circle->name) . '</h2>';
                    
                    // You can customize the way circle activities are displayed here
                    //bp_activity_loop();
                } else {
                    echo '<p>Invalid circle selected.</p>';
                }
            }
        } else {
            echo '<p>You are not a member of any circles.</p>';
        }
    } else {
        echo '<p>Please log in to view your circles and activities.</p>';
    }

    return ob_get_clean();
}
add_shortcode('user_circles_and_activities', 'display_user_circles_and_activities_shortcode');

—————-
if the selected circle data can be displayed on the same screen or directed to main activity feed either would be good.

-Thanks