Mouad

If you want to embed YouTube videos in your posts but don’t want to copy the embed code every time, this plugin is here to help. 
This plugin integrates with the default WP editor (TinyMCE) and creates a YouTube button that can be easily used to embed YouTube videos. 
The only thing you need to embed a video is its URL. Any URL will do the job (long or short format).
Enjoy this simple yet useful plugin which takes you one step towards easier blogging.

TinyMCE YouTube Embed

This is a plugin for the default WP editor (TinyMCE) that allows users to easily embed YouTube videos in their posts.

Andrew Ozz

This plugin is intended for more advanced users that would like to change the default TinyMCE configuration in WordPress. 
It makes it very easy to add, remove or change all TinyMCE settings for the classic editor and for the classic block in the block editor.

Advanced TinyMCE Configuration

Set advanced TinyMCE options for the classic block and classic editor.

TinyMCE YouTube Embed vs Advanced TinyMCE Configuration