I bought a new laptop a few months ago that does not do 5GHz. It's a Dell Inspiron 3195, with a Qualcomm Atheros 9565 wireless card. The laptop is still available for purchase. When I purchased it it was on sale for $200. (not sure if the link is my exact model, but all the specs are the same, and this particular model does say 2.4GHz with no mention of 5GHz)
https://www.dell.com/en-us/shop/2-in-1-laptops/inspiron-11-3...