Go into the YouTube app, left arrow to the column of choices, down arrow to "Settings", Then down Arrow to "Clear search history". This worked for me, at least when signed into my account. It should also work for "Guest".
Now the hard part: how do you SAVE a search. If I search as "Guest", it puts that into the list of saved searches, so I can re-find my favorite channels and topics. But if I search while logged in to my account, my searches are NOT saved. All I see are YouTubes force-fed searches (with the little odd flame icon), and they are never replaced with my searches. Does anyone else see this, and do you know how to put your own searches there?
Thanks for letting us know about the issue that you are experiencing.
For more information about that channel's features and functionality, you'll want to contact Youtube support directly to inquire further. Many channels on Roku are developed and maintained by the channel provider themselves.
I just went through this all again (another post reported that the YouTube channel completely erased EVERYTHING, my watch history, my searches, etc.). So I'm starting all over again.
I signed into my YouTube account (something I usually do not do), and I found that "Search" had the usually YouTube forced-fed search suggestions. So I did two searches, and they DID NOT replace any of YouTube's reset searches. So I logged out of my account, did two more searches, and they DID get saved.
So: does ANYONE (including YouTube) really know how to do a search when logged in and have it saved (replace one of the YouTube force-fed searches), so I can hopefully have my history saved in the future for the next time YouTube does a complete wipe of the application? If your searches are being saved while you are logged in, could you please tell the rest of us what you do to get your searches saved? Is there any explanation anywhere that says why searches are not saved if you're logged in?
Or am I going to have to continue to watch YouTube when not logged into an account? In a way, I'd prefer to do it this way, but this is the third time YouTube has completely wiped my watch preferences and saved searches, and I'd really like to avoid going through this again if possible.