I need some help with c#

Please read this page for how to post code properly on the forums: Using code tags properly

Not sure what you’re doing with ‘FlipPlayer’ but it doesn’t look good.

as for the other issue, you wrote:

Player_move();

Which is the class name, and cannot be called as a method.
What you want to write is this:

playermove();

Note the difference.

I didn’t read too much of the rest of your code for now, sorry.

Hope that helps a bit.