How to translate Customer dashboard "Account Information" Tab text in magneto 2.4

Question

I'm trying to translate Magento 2.4 with Porto theme in Danish, all translations working fine but a few of them not work.

1. Under Customer Dashboard > Account Information below text not translated. "In order to reset your password, please Sign Out and click on “Forgot Your Password?” from the Sign In page"
2. Backorder message not translated, in vendor/magento/module-inventory-sales/Model/IsProductSalableCondition

if ($displayQty > 0) {
       $errors = [
         $this->productSalabilityErrorFactory->create([
            'code' => 'back_order-not-enough',
            'message' => __(
                'We don\'t have as many quantity as you requested, '
                . 'but we\'ll back order the remaining %1.',
                $displayQty * 1
                )])
       ];
       return $this->productSalableResultFactory->create(['errors' => $errors]);
    }

Also is there any way to show backorder message in popup on the checkout page?

3. All .js error messages also not translated into danish.

Thank you in advance for your help. Faizan Roshan