Ne3 because it defends the bishop secondly we control the d5 square so maybe in the future we might be able put the knight on d5 which is a strong square for the knight and nc4 is dangerous so ne3 defends it and we also threaten nf5
Answering the title
No, you can't beat it now go take some rest
It's always good to remove your piece from line of attack to avoid un-necessary complications.
Ne3 blocks e4 <> D5 + E4 threat is real.
Where light Bishop belongs to, for the rest of the game ? With C-file open it definitely doesn't belong to C2.
Knight is flexible for Ne3, Ng3, Nh2.
So, simplest move is Bd3 <> getting out of line of attack, clearing C-file for our rook.
I suggest ask computer to switch sides
