Alvaro Gómez

This plugin restricts access for Authors and Contributors so they can only see their own Media Library uploads.
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.
Admins and Editors will still be able to see everyone’s uploads.

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.

recorp

User Menu

Different Menu in Different Pages lets you control menu visibility with flexible conditional rules. 
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For example: 
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<h3>🎯 Key Features</h3>
✓ Show menus to logged-in, logged-out, or all users. 
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 {username}, <code>{display_name}</code>, <code>{first_name}</code>, <code>{last_name}</code>, <code>{nickname}</code>, <code>{email}</code>, <code>{avatar}</code> (with size options). 
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Different Menu in Different Pages – Conditional Menu

Easily assign different menus to pages, posts, user roles, devices, and custom URLs using advanced conditional menu visibility rules.

Restrict Media Library Access vs Different Menu in Different Pages – Conditional Menu