Evidence that Schnitzel knew of Charles's plan from the beginning?

The major issue with Schnitzel’s intelligence is that only Lelouch can defeat Charles.

Yet Schnitzel makes multiple attempts to kill Lelouch / Zero prior to him defeating Charles.

Even during the black nights betrayal if not for Rolo then Charles still wins.

Schnitzel also is cautious and only makes his move when he believes he can win with the least amount of resistance.

Cornelia was able to track down V2 and Schnitzel knew nothing?

Wondering if there is any implications that Schnitzel was prepared to defeat Charles himself.

Could the fleija’s simply destroy the temples which he should have knowledge on the locations of?

It seems like a massive blunder if he didn’t and makes him reliant on Lelouch to even have the chance succeed Charles.