Assuming your GPU is horizontal, yea its not getting any direct air. The fans are on the opposite side of the air being intaked.

If you want to keep your PC on the carpet, spend $40 (I'm sure you can do it cheaper)

https://www.amazon.com/gp/product/B0976F6H4B/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1SHELF

https://www.amazon.com/gp/product/B01NCKZRTL/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1Feet

And make a platform for your PC. Then just do the normal bottom intake and top exhaust.