This is a very "loaded" bounty @boomer - I think you're trying to fry my brain. So let's look at this from multiple angles here. YouTube/Twitch/Kick is a marathon, not a race, not a sprint.
Gaming:
This topic is always the easiest one but what is a good first video that hasn't been done a million times before, what angle creates a unique creator? What game can push you into the realm of "Oh hi, I'm here now". The truth is, very little when pushing into gaming content, the trick I found that worked was to not go "mainstream" and pick a small game with a small following, create the best guide or walkthroughs with your videos, build that community first before moving onto the "big leagues". Cultivate a small community first.
Conclusion: Start small, take it slowly, baby steps
Art:
In this category, I would say that your work would need to be your own, not copies of famous works or attempting to slide into that area by imitation. When I draw, I do my style of borders and work, I think if you have a unique signature or draw/paint style, you are more likely to cultivate a following.
Conclusion: Be unique, not a copycat
Tech:
With "reviews" and "tech" I think it's important for that kind of content to show why you picked it. What is the passion you have in this area, what drives your brain to look at new tech and think "good lord I want that" when covering new or potential new tech, showing why and how you think it's going to be amazing or why is just going to be a waste of time, remember, it's better to ask forgiveness than to ask permission, in this area, sometimes playing the devil's advocate, can be the good role.
Conclusion: Be passionate about what you do and show that in your videos, no one likes "And today I did this".
Real Life:
In this area, one thing to remember before making your first video is where/why and what it is you want to achieve, are you showing your life? Where are you recording, do you have the right setup? Often when using just a phone, wind factors in big time and you can't be heard, so Mic's are needed. But also, these types of videos need to be interesting and informative and have a beginning, a middle, and an end. That is the hardest part.
Conclusion: Make the videos interesting in such a way, that the response is not "Oh just another one"
Twitch/Kick aka Streaming:
If anyone ever asked me "Should I become a streamer" my questions would follow
Do you have a proper Gaming PC setup?
Do you have between 5-8 hours a day spare?
Are you outgoing and sociable?
Can you read quickly?
Are you able to focus on several things at once when in "just chatting" mode?
Can you block out a chatting community when gaming?
IMO streaming is not a "part-time thing" It is an "all in" situation. It's one of the reasons I hardly did it because I simply didn't have the time to do it.
Conclusion: Time and hours are needed here, if you don't have them, don't try, avoid disappointment.
Hope this helps
