How to Add Additional Options in Magento 2

Magento 2 is a platform with a number of improvements that improve the shopping experience. But now that so many different types of organizations have websites, it typically falls short in terms of fulfilling business needs. Fortunately, the developers can offer customization to make use of already-built features.

As part of this customization, you could want to add additional options in Magento 2 to the product page, cart page, and other areas. For example, you might want to include a text box for customers to leave comments on the product page or you might want to display the installments that customers have selected on the cart page.

You must make the adjustments without affecting the essential functionalities because doing so is not a good idea. More options can be added to Magento 2 using the manner described below.

Source : https://meetanshi.com/blog/add-additional-options-in-magento-2/