Why can’t I play Forza Motorsport 2 on my Xbox one

The reason I’m asking is because I can play a lot of Xbox 360
and original Xbox games on my Xbox one some even older than 2007. One example is modern warfare 2. The main thing with backwards compatible games is they need to be popular. I still play fm2 but I have use my 360. In conclusion I would love if fm2 could play on my Xbox one