How to insert an image in Wordpress with the ability to change it later from the admin panel?

Question

CMS

Hello, how to insert an image in Wordpress?
I am engaged in (studying) landing pages on WordPress. First I connected all the images using the bloginfo() function, but in this way there is no way to change the images from the admin panel.

<img src="<?php bloginfo('template_directory'); ?>/img/icons/howWeDo_1.png" alt="" class="howWeDo__img">

Interested in connecting through a tag with an indication of the class.
What function should be used in order to insert pictures with the subsequent ability to change them through the admin panel?

Answer 1

Hello.
Options:
1. Make a shortcode for this
2. Use a Customizer
3. Use custom fields (from plugins, for example, Advanced Custom Fields )
4. You can also look for some hook that will allow you to substitute your class when inserting an image in the WordPress editor.

Answer 2

To do this, it must be inserted from the console. Those. it will be part of the post/page content. Classes can be written in shortcodes, for example. Also, for example, a picture can be a post thumbnail, etc.
Or you can make a separate settings page in the console and define images there.