php FILES not getting inserted into database

Hello so I am currently trying to build an ecommerce website as a project but when I try to insert a product into my database everything but the image gets inserted anybody who could give me any advice
in this problem will be a huge help. Below I posted the entire code in case there are any underlying problems but I think the problem is mostly in the product

image part of the code again thank you for any help because I have been stuck in this problem for a long time.

<?php

        include('../includes/connect.php');
 
        if(isset($_POST['insert_product'])){ 
            

        $product_tile=$_POST['product_title'];
        $product_description=$_POST['product_description'];
        $product_keyword=$_POST['product_keyword'];
        $product_categories=$_POST['product_categories'];
        $product_brands=$_POST['product_brands'];
        $product_price=$_POST['product_price'];
        $product_status='true';



 This is the php code:
$product_image = " ";
$tmp_image = " ";
if(!empty($_FILES["product_image"]["name"])){ 
 $product_image = mysql_real_escape_string($_FILES["product_image"]["name"]);
 $tmp_image = mysql_real_escape_string(move_uploaded_file($_FILES["product_image"]["tmp_name"]));
}


         if($product_tile=='' or $product_description=='' or $product_keyword=='' or    $product_categories=='' or $product_brands=='' or $product_image=='' or $product_price==''  ){
         echo"alert('Please fill all the available fields')";
         exit();
         }else{
              
            move_uploaded_file($tmp_image,"./product_image/$product_image");

        $insert_product="insert into `products`  (product_name,product_description,product_keyword,category_id,brand_id,product_image,product_price,date,status) values ('$product_tile','$product_description','$product_keyword','$product_categories','$product_brands','$productt_image','$product_price',
        NOW(),'$product_status')";
        $result_query=mysqli_query($con,$insert_product);}}
        if($result_query){
         echo"alert('Successfully inserted the product')";
        }

?>

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This is the html code:

 
                Product Name
                <input type="text" name="product_title" id="product_title" class="form-control"
                    placeholder="Enter product name" autocomplete="off" required>
        

        <!-- description -->
    
            <form action="" method="post" enctype="multipartform-data">
                <label for="product_description" class="form-label">Product Description</label>
                <input type="text" name="product_description" id="product_description" class="form-control"
                    placeholder="Enter product description" autocomplete="off" required>
        </div>
    
        <!-- keyword -->
    
            <form action="" method="post" enctype="multipartform-data">
                <label for="product_keyword" class="form-label">Product Keyword</label>
                <input type="text" name="product_keyword" id="product_keyword" class="form-control"
                    placeholder="Enter product keyword" autocomplete="off" required>
    
    
        <!-- categories -->
            <select name="product_categories" class="form-select" id="">
                <option value="">Select Categories</option>
    
                <?php
               $select_categories="Select * from `categories`";
               $result_categories = mysqli_query($con,$select_categories);
               while($row_data=mysqli_fetch_assoc($result_categories)){
                $category_name=$row_data['category_name'];
                $category_id=$row_data['category_id'];
                echo " <option value='$category_id'>$category_name</option> ";
               }
                ?>
    
            </select>
     
    
        <!-- brands -->
    
            <select name="product_brands" class="form-select" id="">
                <option value="">Select Brands</option>
                <?php
               $select_brands="Select * from `brands`";
               $result_brands = mysqli_query($con,$select_brands);
               while($row_data=mysqli_fetch_assoc($result_brands)){
                $brand_name=$row_data['brand_name'];
                $brand_id=$row_data['brand_id'];
                echo " <option value='$brand_id'>$brand_name</option> ";
               }
                ?>
            </select>
      
    
        <!-- Image -->
    
            <form action="" method="post" enctype="multipartform-data">
                <label for="product_image" class="form-label">Product Image</label>
                <input type="file" name="product_image" id="product_image" class="form-control" autocomplete="off"
                    required>
     
    
        <!-- price -->
    
            <form action="" method="post" enctype="multipartform-data">
                <label for="product_price" class="form-label">Product Price</label>
                <input type="text" name="product_price" id="product_price" class="form-control"
                    placeholder="Enter product price" autocomplete="off" required>
       
    
        <!-- submit -->
            <form action="" method="post" enctype="multipartform-data">
        <input type="submit" value="Insert Product" name="insert_product" class="btn btn-info mb-3 px-3">