Is there a way to search for specific videos in my like playlist on my account?
For me I found that History page have search at the right:
Update: As of August 31 2023, the YouTube playlist search script is unfortunately no longer available.
Quickly search and filter through the items in a playlist (like watch later or favorites). Search includes the title of the video and the user it was uploaded by. It will hide/show the playlist items as you type, empty the text box to show all items.
If you don't know how to install user scripts, see this helpful guide
Taken from this suggestion, go to
https://takeout.google.com/ and click the "Deselect all" hyperlink, scrolling to the end of the page to check "YouTube and YouTube Music."
With the "Multiple formats" button below, premium users may get an alternative to
csv in their output. just to the right of it there is an "All youtube data included" button. Click it, (see graphic) again click "Deselect all" at the top, select playlists below, and click the ok button.
Optionally check music-library-songs, as that file contains the full url and the video description, which the playlist does not have.
Click "Next Step" below, and, then if the defaults seem reasonable, click "Export".
The export duration should be short, after which a username/password prompt is provided for file access. Navigate to the Downloads location for the
takeout-yyyymmddid_number-001.zip and navigate the the folders in the zipped archive \Takeout\YouTube and YouTube Music\playlists to
Liked videos.csv, and also, optionally, to the
music-library-songs.csv in the adjacent directory.
The music-library-songs appears to be a more recent addition in the personal collection, thus the liked videos only go back 2-3 years or so. This is an instantly searchable list, whereas older video ids in the playlist must be ported to a search script where they will be url encoded for web verification.
Make click on the link above, click on "Add to Chrome", confirm the pop-up.
Then you need to pin the extension (the puzzle icon in the right above corner of your google chrome windows), make a click on the logo of the extension and sign-in with your google account.
each time you need to use it, you have to click on the extension, it will list all the videos on your current youtube tab. And I mean ALL of them, I have more than 2500 videos on my liked videos playlist and it works perfectly, it also works for other playlists you made, not only liked videos.