Starting Fresh on TikTok Or Rebranding?

So I am starting a new YouTube channel as my 60k plus subscriber channel feels... dead to say the least. I am making a new YT channel but over on TikTok the matching channel has over 180k followers and the videos perform well. I am unsure what I should do with this channel as it seems to be fine. I am considering maybe rebranding the TikTok to match the new YouTube what do you think or should I start fully fresh? I kind of like the privacy a new channel brings. Whats your thoughts on this?

Thats exactly what I think has happened on my main YouTube account, I feel like I am locked into a specific subniche and have no escape and when I have tried to its like the channel becomes penalised for the attempt with very poor views. I think when starting you have to have an exact plan for content and stick to it on repeat and not deviate from it as much. I think I will rebrand the TikTok, the only thing I like about a fresh one is the renewed privacy I would get from it and would feel like a complete fresh start along with the YT channel too.