combobox или как подтянуть данные с другой таблицы

<form action="/Vender/AddAnimals.php" method="post">
    <p>Имя</p>
    <input type="text" name="name">
    <p>Дата  рождения</p>
    <input type="date" name="datebird">
    <p>Пол</p>
    <input type="text" name="setsex">
    <p>Кличка</p>
    <input type="text" name="breed">
    <p>Владелец</p>
    <input type="text" name="user" value="">
    <p>Порода</p>
    <input type="text" name="kind"><br><br>
    <button type="submit">Добавить</button>

    <select name="user">
        <?php while($row1 = mysqli_fetch_array($Animals)):;?>
        <option value="<?php echo $row1[1];?>"><?php echo $row1[2];?></option>
        <?php endwhile;?>
    </select>

  $User = mysqli_query($connect, query: "SELECT * FROM `User`");
    $options = "";
    while($row2 = mysqli_fetch_array($User))
    {
        $options = $options."<option>$row2[0]</option>";
    }

    <select name="user">
        <?php echo $options;?>
    </select>

$user = $_POST['$user'];
$kind = $_POST['kind'];
 
mysqli_query($connect, query: "INSERT INTO `Animals` (`Animals` (`Animal_id`, `Animal_Name`, `Date_Of_Birthday`, `Animal_Sex`, `Animal_Breed`, `Owner_id`, `Animal_Kind`)
VALUES (NULL, '$name', '$datebird', '$setsex', '$breed', $user, '$kind')
");

 (`Animals`

    $User = mysqli_query($connect, query: "SELECT * FROM `User`");
 
    <select name="user">
        <?php while($row1 = mysqli_fetch_array($User)):;?>
            <option value="<?php echo $row1[0];?>"><?php echo $row1[0];?></option>
        <?php endwhile;?>
    </select>