Hello,
i've been thinking about how much energy proof of work stage uses why dont they just let it be proof of stake to use alot less energy, wasnt that the point? I've heard it may go up.

Because Bitcoin needs a distributed consensus to function, and the only known way to achieve this is through proof of work. I've heard claims from parts of the Internet (as may have you) that you can use a proof-of-stake system to get a distributed consensus. As
section six of my document on altcoins shows, this is fundamentally incorrect.