How to implement phone number changes, etc. through the WP admin panel?

Question

WordPress

Hello! I'm doing frontend, but I'm doing very good in backend. bad, so don't beat me)))

I know that you can use Elementor (for example) to edit content visually. I would like to implement the ability to edit data in the header, footers, etc., for example, phone numbers, colors, or just text. Of course, widgets could be used, but it seems to me that these will be crutches. I saw that some good themes have the ability to change some data, including colors, through the admin panel or add. plugin.

Can you please tell me how can this be done? I don’t know how to properly pose the question, so I haven’t found a solution on the Internet yet.

PHP programmers and backenders, please help. I would be glad if you even throw off links with info.

Example, desired result

Answer 1

Hello!
What you see on the screenshot is the result of Theme Customization API
https://misha.blog/wordpress/theme-customizer.html
https://codex.wordpress.org/Theme_Customization_API /ru.wordpress.org/plugins/redux-framework/ or any other frameworks... And if you need it as simple as possible, then ACF https://ru.wordpress.org/plugins/advanced-custom-f... https: //www.advancedcustomfields.com/