From a nerdy point of view, your videos are okay. Because you use proper BM, full sentence with minor grammar and not some rempit BM.

I am a textbook person so I can finish watching your videos without being bored.

If your target is youngsters, you need to go down to their language (don't mistaken it as rempit language), give examples that suit their levels. Use conversational language, imagine you are talking to someone about financial (maybe try to record your voice when you are giving your advice to someone), then your video will be very engaging as if you are talking to me one to one.