How to insert 2 different logos when landing layout on wordpress?

Question

HTML

There should be one logo in the header, but it is slightly different in the footer. How to make it so that the admin can add 2 different logos in the admin?
Is it possible to add 2 logos with add_theme_support( 'custom-logo' )?

Answer 1

Is it possible to add 2 logos with add_theme_support( 'custom-logo' )?

You can add an additional field using the Customizer and then display it in the theme.
More or less like this:

function my_customize_register( $wp_customize ) {
    $wp_customize->add_setting('header_logo', array(
        'default' => '',
        'sanitize_callback' => 'absint',
    ));

    $wp_customize->add_control(new WP_Customize_Media_Control($wp_customize, 'header_logo', array(
        'section' => 'title_tagline',
        'label' => 'Логотип'
    )));

    $wp_customize->selective_refresh->add_partial('header_logo', array(
        'selector' => '.header-logo',
        'render_callback' => function() {
            $logo = get_theme_mod('header_logo');
            $img = wp_get_attachment_image_src($logo, 'full');
            if ($img) {
                return '<img src="' . $img[0] . '" alt="">';
            } else {
                return '';
            }
        }
    ));
}
add_action( 'customize_register', 'my_customize_register' );

And put in a hat

<a href="/" class="header-logo">
  <?php
  $header_logo = get_theme_mod('header_logo');
  $img = wp_get_attachment_image_src($header_logo, 'full');
  if ($img) :
    ?>
    <img src="<?php echo $img[0]; ?>" alt="">
  <?php endif; ?>
</a>

• An example from a real topic . Only a checkbox is added there, but the principle is the same.
  
• An article on the topic of adding a field for text in the footer .
  

Answer 2

Roughly speaking, half of the functionality of wordpress directly depends on your theme.
Fix the theme, add functionality.
If you don't know how, order a freelance job.