On the product page, you can use the product short description block to display a common text description for the products.
However, you can display separate text for each product by using metafield.
First, you need to create a Short description metafield in the Settings -> Metafields and metaobjects -> Products -> Add definition.
After creating the metafield, you need to enter the short description text for the product you want.
Then, customize the product’s short description input field in your theme.
