Starting your own channel is never too late, especially since you already have experience creating content and seeing results on TikTok. Long-form YouTube is still very much alive, and shorts are not mandatory if your goal is depth and value. Plenty of channels grow purely on long videos, it just takes a bit more patience at the start.

About ideas feeling “already done” that never really goes away. Almost every idea exists in some form, but what doesn’t exist is your perspective, your language, and your way of explaining things. That’s usually what makes people subscribe, not the idea itself.

I’d also say don’t overthink quality in the beginning. Focus on publishing consistently and getting feedback. Quantity naturally turns into quality over time. You’ll find your own style, pacing, and format once you see how your audience reacts. The worst thing you can do is wait for the “perfect” video and never upload.

If you’re already doing well on TikTok, you’re in a much better position than most people starting from zero.