Plot hole: WW mentions that "As Darkseid waged war on Earth, he found a secret there", that being the Anti-life equation. But later on it turns out that after being defeated, planet Earth is so "anonymous among a trillion worlds" that he never manages to find it again and destroys another 100,000 worlds (his words!) to look for it again. That would mean that they lack any sort of navigation, and it's hardly possible anyway that the planet would be "anonymous" when it contains what Darkseid wants the most.
Suggested correction: This is in the form of a question and should be uploaded as such. There are several reasons to think why Darkseid couldn't find Earth.
The questions were rhetorical, but thanks to your comment I edited rephrasing it without any questioning ambiguity, since my interest is not much in hearing fan theories filling the gaps in the narration, but rather in pointing out the obvious contradiction where Darkseid is fully aware right from the start that the most important thing in the universe is on Earth, but can't find it again and conquers another thousands of worlds instead "still looking" for it.
Earth was a random planet they attacked and on that random planet Darkseid found a secret, he didn't go there for the secret, he found it whilst there. I don't expect him to go into his ship and put a pin on a map to remember where the planet was in case they were defeated. They expected to win. In their retreat, their way to navigate back to Earth got lost. Perfectly reasonable. You don't know anything about Darkseid's way of conquering and also no idea on how they navigate from world to world.
You know he was not alone, he had an army with a whole slew of ships and subordinates, it takes a lot of suspension of disbelief to swallow the idea that they are conquering worlds going in totally blind and "conquer" worlds they can't ever visit again lacking any charting.They refer the Earth by name and know who their opponents are. An explanation would be also less stringent if Darkseid didn't learn about Anti-life at all and simply "moved on", but it's not the case.
Plot hole: Blind Master can sense when a person is lying. When Snake Eyes admits he is not pure of heart he explains this is because he is driven by his desire for revenge on his father's killer, which Blind Master reads as a truth. However, this is still a lie: a lie of omission. Snake Eyes is only telling part of the truth and omits the fact he is betraying the clan on Kenta's behalf to get his revenge. Snake Eyes is being deliberately deceptive, which is the definition of lying.