Kaspars

<p><a href="https://blockcontext.com" rel="nofollow ugc">Block Context</a> allows hiding individual Gutenberg editor blocks based user status.</p>
<h4>Contribute</h4>
<ul>
<li>Suggest code improvements <a href="https://github.com/preseto/block-context" rel="nofollow ugc">on GitHub</a>.</li>
<li>Report bugs and suggestions on <a href="https://wordpress.org/support/plugin/block-context" rel="ugc">WordPress.org forums</a>.</li>
<li><a href="https://translate.wordpress.org/projects/wp-plugins/block-context" rel="nofollow ugc">Help translate</a> to your language.</li>
</ul>


Block Context

Change Gutenberg block visibility for specific users.

Alvaro Gómez

<p>This plugin restricts access for Authors and Contributors so they can only see their own Media Library uploads.</p>
<p>This has two main uses: Make it easier for Authors to locate their own uploads when Media Libraries grow very big and prevent Authors from using or downloading media that belongs to other users.</p>
<p>Admins and Editors will still be able to see everyone’s uploads.</p>


Restrict Media Library Access

Muy útil

This plugin works fine in WP 5.7.1 

It's just the example code from the official WP docs for the ajax_query_attachments_args filter, with a line added to check if the current user is an administrator. It's very simple.

There's no reason this plugin shouldn't work in an up-to-date WP installation

works in WP 5.7.1

Restricts access for Authors and Contributors so they can only see their own Media Library uploads.

Block Context vs Restrict Media Library Access