[Closed] Broken image media attachment post links with number suffix -2 or -3

I am trying to: Have a web without crawl errors

Link to a page where the issue can be seen:
hidden link
Password for this report page is "debug".
Invalid links are striked out.

I expected to see:
No bad links.

Instead, I got:
All broken links reported by Google Search console has a number suffix in the post_name and type of the post is the attavhment only.

Somewhat paradoxically, not all reported links actually work. Some do work, and I can see from the GSC chart that the number varies from time to time. I don't understand what this could be.
I have verified that all the images in question are in the database, however, they need to be queried using the permalink structure set up, see list number two below.
When the permalink is visited, it redirects to a URL without a suffix. I don't fully understand why this happens and why the browser doesn't stay at the address according to the permalinks settings. All the links below are valid.

You're probably now asking why I'm posting this on the WPML forum. At first I didn't connect this problem to WPML, but after looking at the database I think it might be related to duplicating images for translation, see the table at the end of my summary. In it, focus on the image_title and image_name columns. Is it permissible for there to be multiple different post_name for a single post_title?

If you evaluate the table as valid, then I will look elsewhere and you don't need to pursue this further.

There may also be a problem with the .htaccess file settings.

Options +FollowSymLinks
RewriteEngine on

<IfModule mod_speling.c>
CheckSpelling On
CheckCaseOnly On
</IfModule>

# Redirect HTTP with www to HTTPS with www
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} ^www\. [NC]
RewriteRule .* hidden link{HTTP_HOST}%{REQUEST_URI} [R=301,L]
# Redirect HTTP without www to HTTPS with www
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule .* hidden link{HTTP_HOST}%{REQUEST_URI} [R=301,L]
# Redirect HTTPS without www to HTTPS with www
RewriteCond %{HTTPS} on
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule .* hidden link{HTTP_HOST}%{REQUEST_URI} [R=301,L]

# BEGIN WordPress
# The directives (lines) between "BEGIN WordPress" and "END WordPress" are
# dynamically generated, and should only be modified via WordPress filters.
# Any changes to the directives between these markers will be overwritten.
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress