How to save linked model?

Question

Yii

Standard question start
I can't figure it out. It is necessary to save a multilingual form, in which there may or may not be more than one language taken from the Lang model

$model = new Settings();
  $model_lang = new SettingsLang();
$lang_array = Lang::find()->all();

In the form, I need to make the number of fields according to the number of languages

<?php $form = ActiveForm::begin(); ?>

    <?php
    foreach ($lang_array as $key => $value) {
        echo $value->name;
        ?>
        <?= $form->field($model_lang, 'name')->textInput(['maxlength' => true]) ?>

        <?= $form->field($model_lang, 'full_name')->textInput(['maxlength' => true]) ?>

        <?= $form->field($model_lang, 'address')->textInput(['maxlength' => true]) ?>

        <?= $form->field($model_lang, 'bank_detail_bank_name')->textInput(['maxlength' => true]) ?> 
<?php } ?>
    <?= $form->field($model, 'main_email')->textInput(['maxlength' => true]) ?>
    <?= $form->field($model, 'license_number')->textInput(['maxlength' => true]) ?>

It's clear with model - take it and save it. How can I make model_lang dynamic so that I can save it later? Poke in the right direction, plz?