I am new I have noticed that when I try to put items that I have listed I can’t put them in my cart I get a error message
why I own an new shop
Because you cannot buy from yourself.
Buying from your own shop? That is shilling and against Etsy rules.
@ClupeaByMonica: Purchasing from yourself is not allowed - https://www.etsy.com/legal/policy/shilling/243317364583