php - Form is submitting only the final row data in a foreach loop, not the correct selection information

I had originally had the form inside of the foreach(ran into issues that seemed unsolvable because it would call the function as many times as the foreach had listed).

So now, with the<form> outside of the foreach it will only submit the data from the final collection in the foreach loop. But what I need it to do is send the data depending on which item in the foreach loop is checked.

This is my function for submitting the information to the database:

function user_add_new() {
    global $wpdb;
    $bookTOadd = $_POST["book"];
    $listTOadd = $_POST["listID"];
    $userID = $_POST["user"];

    $addTABLE = $wpdb->prefix . 'plugin_read';
    
    $wpdb->insert( 
        $addTABLE, 
        array( 
            'bookID' => $bookTOadd, 
            'userID' => $userID, 
            'listID' => $listTOadd, 
        ) 
    );
}
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And this is my foreach loop with the form outside of it:

<form action="<?php user_add_new();?>" method="post">
     <?php 
     foreach($books_array as $i ) {
            $s = $i->title;
            $o = $i->listID;
            $r = $i->submittedBy;
            $d = $i->bookDESC;
            $t = $i->id;
            $current_user = wp_get_current_user();
            $current_id = $current_user->ID;
            ?>
            <?php if($r == ''.$current_user->ID.''|| $r == 'administrator') { ?>
            <div class="user-wrap">
                <div class="inner-wrap">
            <!---entire checkbox--->
                    <div><span class="check">
                        <input type="checkbox" value="" onChange="this.form.submit()">
                        <input type="hidden" name="item" value="<?php echo $t;?>">
                        <input type="hidden" name="listID" value="<?php echo $o;?>">
                        <input type="hidden" name="userID" value="<?php echo $current_id;?>">
                    </span></div>
            <!---entire checkbox--->
            <!---info from book--->
                    <div>
                        <b><?php echo $s; ?></b><br>
                        <?php echo $d; ?>
                    </div>
            <!---info from book--->
                </div>
            </div>
    
            
            <?php } else {
            }; ?>
    <?php
         
     };
    ?>
</form>
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I did check the output withvar_export($_POST); and it indeed does only return the data for the final item in the foreach loop when it needs to return data depending on which foreach item is checked

I have been stuck on this single form for hours now, I think I need a fresh mind to help find the solution. I truly appreciate any help!

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