Don't believe everything is posted on YT. Most of those channels are designed to get your attention and make money from views. Very few are real constructions as you see... Behind those scenes there's a lot that you DO NOT see.

My advice: Do it yourself, with your own mind, hands, materials, like you dream it. Don't try to copy any of those YT bullshit videos. Only like that you will see how is it and what challenges you may encounter. But once you finish it, it will be your most rewarded thing in your life.