No, you do not defrag an SSD - ever!!
The easiest way to transfer everything would be to "image" your OS drive (C:) using one of the many backup programmes available.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?