magento2.3 – What is most easy way to move the old Magento 1 frontend layout to the new Magento 2 edition?

I will setup my old Magento 1.4 webshop to the Magento 2.3 webshop. Can somebody help me to explain which steps i have to make?
So far i found, data migration tool cannot be used for it?

Which folders i can find that? And how to install it to the new version?

Appreciate you help!