Why did operation sea lion fail?

Well most of the historians already agreed that the, "Sea Lion", would have failed anyway because of the weakened German Sea Power. Which was also compared to the, "Royal Navy".

Explanation:

frederick the great and the war of austrian succession. frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. he also declared himself king of bohemia, and maria theresa sent troops to retake bohemia. in august he led 80,000 of these men across the frontier into bohemia, his

there were abundant sources of fuel nearby