If you're using the Create mod on version 1.20.1, you will not able to get copper buttons in survival mode; being the create mod uses copper nuggets and it removed the crafting for copper nugget via Golem Dandori.
I thought it would be amazing, to be able to use both of these mods together. (But you can't, I didn't know where I could talked about the issue; so I put it here.)
If you're using the Create mod on version 1.20.1, you will not able to get copper buttons in survival mode; being the create mod uses copper nuggets and it removed the crafting for copper nugget via Golem Dandori.