When you lost a level because a game's bundled but you already entered some GA at this level

They are from a current bundle, so they are lots. I made them last 1 week to let people join later

That's a fallacy of perspective.
Yes, most entries are late, but that's because people are using their points on earlier-ending giveaways first.
The longer a giveaway is up, the more people that take note of it, and plan on entering it as it nears ending.
Giveaways with longer timespans end up with significantly larger entry numbers.

Of course, I'm not sure what the benefit of that is, to either entrants or creator, so there's still no real reason to make longer giveaways [unless they're, say, for a group or event, and you want to make sure everyone gets a fair chance to see the game is available].