My Youtube Algorithm Is Too Narrow

I have a channel that does pretty well. But 90% of the videos that work are if I am talking about one specific TV show. I don't want to only talk about this one show everyday. The other videos usually still get good CTR and watch time and likes and comments, but YT just doesn't seem to push them because they aren't about that one show. All videos are in the same niche and demographics, etc.

So, is it best to create a second YT channel that does similar content but not talking about that specific show or just keep putting out content about that one show and other stuff too and hope the algorithm eventually pushes it. The second idea seems hard because I will get 1/10 the subscribers from the "other" content so it seems to me the algorithm will always push the "one show" content.

Also I make decent money on that one show commentary so not sure I want to screw with that algorithm/cash cow.

Any thoughts?
Thanks.

Ask the viewers in a community post and see their response.
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If I were making vids about Game Of Thrones, I would make vids about House of The Dragon, heroes movies... but not comedy shows. Always try and see what works - you can test with shorts.
A second channel is a good idea if you have an old channel with 100k+ subs.

Thanks for the response and suggestions.

I have tested it many times, and the videos go nowhere. For 2 months in summer when that show was off air I did videos 5 days a week all bombed (lots with good metrics too). As soon as the TV show was back I talked about it...success.

You should ask your viewers about their opinion on the community tab, but I'd say starting a new channel is better if you want to completely change your niche to videos like CashCow etc.