UjW0L

This plugin lets you to display Youtube widget on sidebar with the themes that supports sidebar and Footer
It displays video and playlist of your choice with video id and playlist id. 
It also lets you display all videos from you youtube channel with option to navigate to next nd previous button. 
No google API key needed. Uses Youtube rss feed.
You have choice between single video , playlist and channel.
Note:

Simple Youtube Widget

Plugin that provides users option to display Youtube Widget on the Sidebar or Footer

Widum Creative Studio

RuTube Widum Player позволяет легко встраивать видео с RuTube на ваш сайт WordPress. Просто вставьте ссылку, и плагин автоматически преобразует её в видео плеер.
<h3>External Services</h3>
This plugin embeds videos from the RuTube platform using their iframe. No user data is sent to RuTube directly, but the plugin relies on their service to display the embedded videos.
Terms of Service: https://rutube.ru/info/agreement/ 
Privacy Policy: https://rutube.ru/info/privacy-policy/

RuTube Widum Player

RuTube Widum Player позволяет легко встраивать видео с RuTube на ваш сайт WordPress.

Simple Youtube Widget vs RuTube Widum Player