You can add products that are to be displayed in the frontend through the backend. In this article, you will get to know how to enable products on the frontend.
Login to Backend
Navigate to Catalog -> Products.
By clicking on Product, you will land on the Products page, where a list of all the added products is displayed. Here, to enable the product on frontend you have to click on the Edit button in the Action column.
On the Edit page, there is an Enable Product section. Toggle Yes on this section in order to enable the product on Frontend.