Each bitcoin transaction costs 215 kilowatt-hours of energy??

Honestly, I have no idea where these numbers came from,
I would say 2 watt per transaction (not kw).
But if you are so environmentally sensitive person,
why don't you take a closer look,
of how much electricity is being consumed by the banks on a global scale.
There are 90.000 branches with average branch size of 5,000 square feet. This is just the U.S.
A branch is made of concrete and steel and consumes not only Electricity, but Gas and other materials as well.

Bitcoin is the most energy efficient transaction system ever.

Seems like most people just want to become super rich in a short period of time.
If you don't believe in this new technology, and just want to earn quick money, I think you will probably not achieve what you want.
All I want to say is be patient, live your life, and don't get too emotional by all the negative news/FUD. Yes, crypto might be ended in a really bad way and you lose most/all your money. But if you truly believe in the new technology, just invest the projects you like the most and hold until it gets mature and returns.