FreeTube is a feature-rich and user-friendly YouTube client with a focus on privacy.
Since people talk a lot about Invidious lately, I would like to share this great desktop app for those who don't know it yet. It uses Invidious and lets you watch YouTube without ads. It even has SponsorBlock (you might need to enable it in settings though). You can add videos to favourites and see the history - all stored locally. It's Free Software.