Alert System - displaying 9

Hey,

I'm working on my alert system, but lack of knowledge in foreach, and best possible way is hitching me. Basically I have three or four different kinds of alerts. 9 can fit on a page. I'm using a foreach to loop through them to get them onto the page. After that I'm not sure. That's where it's confusing. I could use JS to count them and once they're all deleted refresh the page and nine more will load, lol. That's what I was thinking... ahh. Anyway. My foreach is below... Where I try to give $sender a value, that block doesn't fire.

foreach($retrievedAlerts as $L1)
             { foreach($L1 as $L2 => $value)
               {   
               // Only nine alerts displayed on a page.
                 if($L1 != 10)
                 {
                   //Display outline for friend requests.
                   if($L2 === 'type' && $value === "friend request")
                   {   
                     $retrievedMime = [];
                     $sender = "";
                     //Extract sender
                     
                     if($L2 === 'from')
                     {

                         //Bug, doesn't fire.
                         $sender = $value;
                     }
                     //Test if posting user has profile image
                     
                     $retrieveMime = $dbConnect->prepare("SELECT `profileImageMime` FROM `profileSettings` WHERE `handle` = ?");
                     
                     try{
                     
                       $retrieveMime->execute([$sender]);
                       $retrievedMime = $retrieveMime->fetch();
                   
                     }catch(\PDOException $e){  }
                   
                   
                     echo "<div id=\"alertwrapper\" style=\"height:62px; width:400px; margin-bottom:12px; padding:4px;\">\n"
                    . "\t\t\t\t<div id=\"alertimage\" style=\"background-color:blue; height:62px; width:62px; float:left;\">\n";
                       
                       if(!empty($retrievedMime))
                       {
                           echo "\t\t\t\t\t\t<img alt=\"alertpic1\" src=\"users/" . $sender . "/images/profile" . $retrievedMime[0] . "/" . "style=\"background-color:blue;height:62px; width:62px;\" />\n";
                       
                       }else{
                       
                         echo "\t\t\t\t\t\t<img alt=\"alertpic1\" src=\"system/images/profile/stockprofile.jpg\" style=\"background-color:blue;height:62px; width:62px;\" />\n";
                       }
                       
                       echo "\t\t\t\t</div>\n"
                       . "\t\t\t\t<div>\n"
                       . "\t\t\t\t\t<span>&nbsp;Handle:" . $sender;
                                             
                       echo  "\t\t\t\t\t</span><span></span><br />\n"
                         . "\t\t\t\t\t<span>&nbsp;Message:Friend Request</span><span></span><br />\n"
                         . "\t\t\t\t\t<span>&nbsp;<a>accept</a></span>"
                         . "\t\t\t\t\t<span style=\"margin-left:8px;\">"
                         . "\t\t\t\t\t<a>deny</a></span>\n"
                         . "\t\t\t\t</div>\n"
                         . "\t\t\t</div>\n";
                     }                 
                   }
                 
                 }

PHP: