Add a notice in product pages in woocommerce

Hello,

I want to add some text on the red highlighted area as shown in this image: https://postimg.org/image/whbmah0ur/

I’m not good at programming, but was looking for Hooks (Filters) to do this, but couldn’t.

Can someone give me a tip on how to add a “note” after the buy button, in all product pages?

Thks.