При сабмите в $_REQUEST ничего не приходит

    <form method="post" class="panel-body">
                  <div style="" class="filter__wrapper">
              <div class="panel">
                <div class="panel-heading">
                  <div class="block-panel" href="#">
                      <span style="color:black;">Бренд</span>
                    <i class="fa fa-shopping-cart">
                      <svg
                        width="18"
                        height="18"
                        viewBox="0 0 18 18"
                        fill="none"
                        xmlns="http://www.w3.org/2000/svg"
                      >
                        <path
                          d="M14.2477 11.25L8.99768 6.75L3.74768 11.25"
                          stroke="#000"
                          stroke-linecap="round"
                          stroke-linejoin="round"
                        />
                      </svg>
                    </i>
                  </div>
                </div>
                <div class="panel-collapse">
        
                    <div class="form_radio">
                      <input
                        id="radio-1"
                        type="radio"
                        name="brand"
                        value="SITRAK"
                      
                      />
                      <label for="radio-1">SITRAK</label>
                    </div>
        
                    <div class="form_radio">
                      <input id="radio-2" type="radio" name="brand" value="HOWO" />
                      <label for="radio-2">HOWO</label>
                    </div>
                 
                </div>
              </div>
              <div class="panel">
                <div class="panel-heading">
                  <div class="block-panel">
                    <span style="color:black;">Тип техники</span>
                    <i class="fa fa-shopping-cart">
                      <svg
                        width="18"
                        height="18"
                        viewBox="0 0 18 18"
                        fill="none"
                        xmlns="http://www.w3.org/2000/svg"
                      >
                        <path
                          d="M14.2477 11.25L8.99768 6.75L3.74768 11.25"
                          stroke="#000"
                          stroke-linecap="round"
                          stroke-linejoin="round"
                        />
                      </svg>
                    </i>
                  </div>
                </div>
                <div class="panel-collapse">
                
                    <div class="form_radio">
                      <input
                        id="type-1"
                        type="radio"
                        name="type"
                        value="тягач"
                        checked
                      />
                      <label for="type-1">Седельные тягачи</label>
                    </div>
        
                    <div class="form_radio">
                      <input id="type-2" type="radio" name="type" value="cамосвал" />
                      <label for="type-2">Самосвалы</label>
                    </div>
                    <div class="form_radio">
                      <input
                        id="type-3"
                        type="radio"
                        name="type"
                        value="полуприцеп"
                      />
                      <label for="type-3">Полуприцепы</label>
                    </div>
                    <div class="form_radio">
                      <input id="type-4" type="radio" name="type" value="Шасси" />
                      <label for="type-4">Шасси</label>
                    </div>
                    <div class="form_radio">
                      <input
                        id="type-5"
                        type="radio"
                        name="type"
                        value="cпецтехника"
                      />
                      <label for="type-5">Спецтехника</label>
                    </div>
                 
                </div>
              </div>
              <div class="panel">
                <div class="panel-heading">
                  <div class="block-panel">
                    <span style="color:black;">Колесная формула</span>
                    <i class="fa fa-shopping-cart">
                      <svg
                        width="18"
                        height="18"
                        viewBox="0 0 18 18"
                        fill="none"
                        xmlns="http://www.w3.org/2000/svg"
                      >
                        <path
                          d="M14.2477 11.25L8.99768 6.75L3.74768 11.25"
                          stroke="#000"
                          stroke-linecap="round"
                          stroke-linejoin="round"
                        />
                      </svg>
                    </i>
                  </div>
                </div>
                <div class="panel-collapse">
                  
                    <div class="form_radio">
                      <input
                        id="wheel-base-1"
                        type="radio"
                        name="koleso"
                        value="4х2"
        
                      />
                      <label for="wheel-base-1">4х2</label>
                    </div>
        
                    <div class="form_radio">
                      <input id="wheel-base-2" type="radio" name="koleso" value="6х2" />
                      <label for="wheel-base-2">6х2</label>
                    </div>
                    <div class="form_radio">
                      <input id="wheel-base-3" type="radio" name="koleso" value="6х4" />
                      <label for="wheel-base-3">6х4</label>
                    </div>
                    <div class="form_radio">
                      <input id="wheel-base-4" type="radio" name="koleso" value="6х6" />
                      <label for="wheel-base-4">6х6</label>
                    </div>
        
        
                </div>
              </div>
        
              <button type="submit">Применить</button>
        </form>