According to Backlinko , writing unique meta descriptions can increase your site’s organic CTR by up to 5.8% compared to pages without a description.
Keyword . The keyword used by the user in the search query is usually highlighted in bold in the description; this helps to capture attention and structure the description in a convincing way, also providing a signal of relevance.
Appropriate length often related to managing text length. Although there are no real limits to creating a meta description, it is clear that it may not be functional if it is too long. In order to create a meta description that allows correct viewing on all devices, it is advisable to orient the text between 144 and 160 characters. Even WordPress, for example, tends to approve content that falls within the values just indicated.

Call to action . The call to action, with positive connotations, can be useful to convince the user to visit your page, especially if it is an eCommerce. CTAs that contain “discover the new collection”, “start the free trial” can push and motivate Internet users to click on your page.