Bingo is a game of pure chance — every card has exactly the same odds of winning as any other card in the same round, regardless of who's holding it, how long they've played, or what pattern they're going for.
Does buying more cards help?
Yes, but only in the straightforward way you'd expect: more cards means proportionally more chances to have the winning numbers, since each card is an independent shot at the same draw. It doesn't change the odds for any single card, and it doesn't shift the draw itself.
Can any skill or strategy change the outcome?
No. Once balls start being called, there's nothing a player can do to influence which numbers come up — the draw order is fixed before play starts and can't be adjusted based on cards in play, chat activity, or anything else.
How do I know the draw wasn't rigged?
You don't have to take that on faith. A provably fair round publishes a commitment to its shuffle before any card is sold, then reveals the seed once the round settles — so the sequence was locked in from the start and you can verify it yourself. See provably fair, step by step.