Problem with filtering in tagmanager2 in modx revo?

Question

MODX

Good time of the day. The client refused Ajax filtering. Now I do the usual filtering by documentation

<div id="filters">
    <form action="" method="get">
        
        <input type="hidden" name="sortby" value="pagetitle" />
        <input type="hidden" name="sortdir" value="asc" />
        <input type="hidden" name="limit" value="10" />
        
        
        
        <button type="submit">Подобрать</button>
        <button type="button" onclick="window.location.href = window.location.pathname; return false;">Сбросить</button>
    </form>
</div>

==================================================================

<div class="sorting">
    
    <select class="f_sortby" name="sortby">
        <option value="pagetitle">по названию</option>
        <option value="price">по цене</option>
        <option value="publishedon">по дате</option>
    </select>
    &nbsp;
    <select class="f_sortdir" name="sortdir">
        <option value="asc">по возростанию</option>
        <option value="desc">по убыванию</option>
    </select>
    &nbsp;
    <select class="f_limit" name="limit">
        <option value="10">10</option>
        <option value="20">20</option>
        <option value="40">40</option>
    </select>
    
    <div class="clearfix"></div>
</div>

<div id="products">
    
    <div class="clearfix"></div>
</div>

<ul class="pages">
    
</ul>

When you click on the select button, it throws you to the main page (link like index.php?sortby=pagetitle&sortdir=asc&limit=10&f_komnat=&f_obsh_kv=122&f_etaj=). What am I doing wrong?
I forgot to say that I have a filter on each category, that is, I have not one category, but several at once, and they should not be filtered by ajax.