How do I attach this armour to my character?

So I have create this armour and grouped it I just need help attaching it to the character I tried using Weld Constraints but it was always offset but It would move with my body / arm

For Example (This was only one piece of the armour but the rest was the same) : https://imgur.com/a/lK0no4z

This is the armour that I want to attach to my Character : https://imgur.com/a/XbuKGtn

I don't know if I'm using the weld constraints wrong or using the wrong method.

This is my code too (Also its just in a local script to make it easier I will make it FE later) : https://imgur.com/a/AE1nnRB