Change a php value with button click

I have a WordPress query and want to filter it with a value for the “categroy_name”:

$value="2021";
<a href="<?php echo esc_url( add_query_arg('category_name',$value) ); ?>">2021</a>
$args = array(
    'category_name' => $value
);

So I have a button which sends the value, but how can I add more buttons with other values like “2020” and “2019”?