Ajax ve PDO ile bir işlem

<div class="padding-30 rounded bordered">
                        <div class="row">
                            <?php 
                            
                            $querya = "SELECT * FROM icerik WHERE durum = 1 ORDER BY Tarih DESC LIMIT 3,8";
                            $stmta = $db->prepare($querya);
                            $stmta->execute();
                            $resulta = $stmta->fetchAll();
                            
                            foreach ($resulta as $rowa) {
                                $kategori_ida = $rowa['katid'];
                                $yazar_ida = $rowa['yid'];
                                
                                $query_kategoria = "SELECT * FROM kategori WHERE id = $kategori_ida";
                                $stmt_kategoria = $db->prepare($query_kategoria);
                                $stmt_kategoria->execute();
                                $row_kategoria = $stmt_kategoria->fetch();
                                
                                $query_yazara = "SELECT * FROM yazar WHERE id = $yazar_ida";
                                $stmt_yazara = $db->prepare($query_yazara);
                                $stmt_yazara->execute();
                                $row_yazara = $stmt_yazara->fetch();
                            ?>
                            <div class="col-md-12 col-sm-6">
                                <!-- post -->
                                <div class="post post-list clearfix">
                                    <div class="thumb rounded">
                                        
                                        <a href="blog-single.html">
                                            <div class="inner">
                                                <img src="<?php echo $rowa['resim']; ?>" style="width: 265px;height: 200px;" alt="<?php echo $rowa['baslik']; ?>" />
                                            </div>
                                        </a>
                                    </div>
                                    <div class="details">
                                        <ul class="meta list-inline mb-3">
                                            <li class="list-inline-item"><a href="#"><img src="<?php echo $row_yazara['pfoto']; ?>" style="width: 30px;height: 30px;" class="author" alt="<?php echo $row_yazara['adi']; ?>"/><?php echo $row_yazara['adi']; ?></a></li>
                                            <li class="list-inline-item"><a href="#"><?php echo $row_kategoria['adi']; ?></a></li>
                                            <li class="list-inline-item"><?php echo $rowa['tarih']; ?></li>
                                        </ul>
                                        <h5 class="post-title"><a href="blog-single.html"><?php echo $rowa['baslik']; ?></a></h5>
                                        <p class="excerpt mb-0"><?php echo mb_substr($rowa['aciklama'],0,150); ?></p>
                                        <div class="post-bottom clearfix d-flex align-items-center">
                                            
                                            <div class="more-button float-end">
                                                <a href="blog-single.html"><span class="icon-options"></span></a>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                            <?php } ?>
                        
                            
                            
                        </div
                        >
                        <!-- load more button -->
                        <div class="text-center">
                            <button class="btn btn-simple">Daha Fazla Yükle</button>
                        </div>
                    </div>

 <button class="btn btn-simple">Daha Fazla Yükle</button>