multiple orderby sorting with pagination in laravel not working

 I wrote the code snippet inside my Laravel controller and I want to sort the products by product number first and then sort the previously sorted products by inventory. My problem is that the first sort is executed inside the written command but the second sort does not happen. My code snippet is as follows:

DB::statement("SET SQL_MODE=''");//this is for fix groupby error!
        $productdetail = Sa_product::leftJoin('sa_product_allproperties', 'sa_products.productid', 'sa_product_allproperties.product_id')->where('sa_products.product_status', '1');
        if (isset($data['static']) && $data['static']['search_products'] != '') {
            $search_word = $data['static']['search_products'];
            DB::statement("SET SQL_MODE=''");//this is for fix groupby error!
            $exploded_word = explode(',', $search_word);
            $counter = 0;
            $productdetail = $productdetail->where(function ($q) use ($exploded_word, $counter) {
                $counter = 0;
                foreach ($exploded_word as $word) {
                    if ($counter == 0) {
                        $q->where('sa_products.title', 'LIKE', "%{$word}%");
                    } else {
                        $q->orwhere('sa_products.title', 'LIKE', "%{$word}%");
                    }
                    $counter++;
                }
            });

        }
        $data['staticcats'] = explode(',', $data['static']['product_cats']);
        if (isset($data['static']) && $data['static'] != '') {
            $explodecats = explode(',', $data['static']['product_cats']);
            unset($explodecats[0]);
            array_pop($explodecats);
        } else {
            $explodecats = [];
        }
        if (isset($explodecats) && $explodecats != []) {
            $counter = 0;
            $productdetail = $productdetail->where(function ($q1) use ($explodecats, $counter) {
                $counter = 0;
                foreach ($explodecats as $cats) {
                    if ($counter == 0) {
                        $q1->where('sa_products.catid', 'LIKE', "%,{$cats},%");
                    } else {
                        $q1->orWhere('sa_products.catid', 'LIKE', "%,{$cats},%");
                    }
                    $counter++;
                }
            });
            $productdetail = $productdetail->orderBy('visited_counter', 'DESC');
        }
        $data['staticcats'] = explode(',', $data['static']['product_brands']);
        if (isset($data['static']) && $data['static'] != '') {
            $explodebrands = explode(',', $data['static']['product_brands']);
            unset($explodebrands[0]);
            array_pop($explodebrands);
        } else {
            $explodebrands = [];
        }
        if (isset($explodebrands) && $explodebrands != []) {
            $counter = 0;
            $productdetail = $productdetail->where(function ($q2) use ($explodebrands, $counter) {
                $counter = 0;
                foreach ($explodebrands as $brands) {
                    if ($counter == 0) {
                        //$q1->where('brand_id','LIKE', "%,{$brands},%");
                        $q2->where('sa_products.brand_id', "{$brands}");
                    } else {
                        //$q1->orWhere('brand_id','LIKE', "%,{$brands},%");
                        $q2->orWhere('sa_products.brand_id', "{$brands}");
                    }
                    $counter++;
                }
            });
        }
        $productdetail = $productdetail->orderBy('sa_products.productid','DESC')->orderBy('sa_product_allproperties.stock_count','DESC')->groupBy('sa_products.productid')->paginate(20);
        if (isset($productdetail) && $productdetail->count()>0)
        {
            $data['searched_products'] = $productdetail;
        }

After executing the above code, the received products are sorted by product number, ie the orderBy('sa_products.productid', 'DESC') occurs, but the second sorting is done with the orderBy('sa_product_allproperties.stock_count', 'DESC') Which is not run for inventory sorting.

Can anyone help me solve this problem?