Save many model in foreach too slow

I am building the e-commerce application, I have struggled to this problem when save many of variants:

Supposedly, I got a request return the collection:

let data = {     "_token"    :"{{ csrf_token() }}",     "data"  : tableToJson($(".fixed-table table"), $(".scroll-table table")), // return data}let res = $.post(url, data); 

It will result like this (in this case, I using with variant with 2 maximum options):

data = {{    color: black,    size: 10,    sku: abxc,    quantity: 1,    price: 100$,},{    color: blue,    size: 10,    sku: abxz,    quantity: 2,    price: 1100$,},,....}

I intended to insert in controller with the function:

function insertVariant(Request $request) {    $datas = $request->all();    $options = new Options();    $id = options->insertGetId(            ['name'=>'$data['color'] ,            ]            ,             ['name'=>'$data['size'] ,            ]        ]);    foreach ($datas in $data) {        $sku = new SKU();        $sku['name'] = $data['sku'],        $sku['price'] = $data['price'],        $sku['quantity'] = $data['quatity']        $sku->save();        $variant_value = new VariantValue();        $variant_value['variant_options_id'] = $id[0];        $variant_value['value'] = $data['color'];        $variant_value['value'] = $data['size'];        $variant_value->save();        $sku_variant_value = new SKUVariantValues();        $sku_variant_value['variant_value_id'] = $variant_value->id;        $sku_variant_value['sku_id'] = $sku->id;        $sku_variant_value->save();    }    }

I see that request return too long as though its success?

how can I optimize when save multiple model in foreach with less cost as less as possible?

EDIT:I am using the database as suggestion: Modeling Product Variants