There are several places with new OEM parts and also Refurbished used parts.
Mobile Sentrix is one I found for "used " and refurbished - cleaned up parts. [link|https://www.mobilesentrix.com/replacement-parts/motorola/motorola-others/moto-razr-5g-2020|Motorola Parts|new_window=true]
New, two other places have been referenced for parts in this and other Moto Razr posts.
I have found a few others, but their prices are outrageous.