Save the whole list of your saved youtube playlists to text file. Open youtube.com/feed/library or youtube.com/feed/you press "show more" in playlists section. scroll page down to load all playlists list and run the following script in console

readme.md

Export all your saved YouTube playlists

Since Google Takeout for YouTube doesn't export playlists you've saved, but only those you've created, I've written this script that will automatically export the list of saved playlists to a text file

How to use that:

1. Open youtube.com/feed/library or youtube.com/feed/you
2. At the bottom of the "Playlists" section, click the "Show more" button
3. Scroll down the page to the bottom to ensure that all playlists are loaded and displayed
4. Open JS console
5. Paste and run the script

Also, you can export the contents of a specific playlist to a text file. To do this:

1. Replace the first line of the script with the following:

var all_contents = document.querySelectorAll('div#contents > ytd-playlist-video-renderer > div#content > div#container > div#meta > h3 > a')

2. Open playlist you want to export. Your likes for example: https://www.youtube.com/playlist?list=LL
3. Scroll down the page to the bottom to ensure that all contents are loaded and displayed
4. Open JS console
5. Run the changed script

index.js

var all_contents = document.querySelectorAll('div#contents > ytd-item-section-renderer:nth-of-type(3) > div#contents > ytd-shelf-renderer > div#dismissible > div#contents > ytd-grid-renderer > div#items > ytd-grid-playlist-renderer > div#details > yt-formatted-string > a')

async function getFullTitle(item) {
    var double_parent_node = item.parentNode.parentNode
    var channel_name_container = double_parent_node.querySelector('ytd-video-meta-block > div#metadata > div#byline-container > ytd-channel-name > div#container > div#text-container > yt-formatted-string')
    var playlist_title = double_parent_node.querySelector('h3 > a')
    var _a = channel_name_container.querySelector('a')
    if (_a) {
        return playlist_title.title + ' | -> ' + _a.text + ' | -> ' + _a.href + '\n'
    } else {
        return playlist_title.title + ' | -> ' + channel_name_container.title + '\n'
    }
}

async function getHREF(item) {
    return item.href + '\n'
}

async function putThingsTogether() {
    var list = ''
    for (var i = 0; i < all_contents.length; i++) {
        list += await getFullTitle(all_contents[i])
        list += await getHREF(all_contents[i])
        list += '\n'
    }
    return list
}

var _list = await putThingsTogether()

function download(filename, text) {
    var blob = new Blob([text], { type: 'text/plain' })
    var url = URL.createObjectURL(blob)

    var link = document.createElement('a')
    link.href = url
    link.download = filename
    link.click()

    URL.revokeObjectURL(url)
}

download('my_youtube_saved_playlists.txt', _list)