NFS Most Wanted (2005) and Carbon

@Mahawatta NFS Most Wanted 2005 never had an official digital release. It only had physical hard copy release.

NFS Carbon was made unavailable for purchase since May 31, 2021.

The reason why you can't buy NFS Most Wanted 2005 and NFS Carbon is likely due to the car and / or music licenses expiring. (Although EA stated that NFS Carbon's reason was to permanently shut down its online servers)

You can try your luck finding copies of both NFS Most Wanted 2005 and NFS Carbon on Amazon or Ebay.

@TheRealJony Wrong. Most Wanted 2005 was available digitally until 2012 on Xbox 360.