If you want a real engineer, watch “stuff made here” perhaps the most competent engineer on YouTube.
If you want to watch top quality unbiased science content, there’s “smarter every day”, “veritasium” and “3blue1brown”. They’re all great, I highly recommend them all.
If you want a good combo of engineering and science, and probably the smartest person on YouTube, “the thought emporium” will blow your mind. The projects they come up with… I never knew any of that was possible.