Lately I've been looking at terms like blockchain builders and bundles. Honestly, retail investors don't need to push themselves to become half-researchers... You just need to know: when you click "Exchange/Trade," it doesn't necessarily mean the transaction is immediately added to a block. Some people will bundle multiple transactions, choose the order, and conveniently profit from the "spread." That's why sometimes you feel like you've been backstabbed by slippage.

There are only two things you can do: don't set too aggressive slippage, and try to use protected routing/private transactions (at least don't expose yourself by going naked on the public mempool).
I'm too lazy to be surprised about cross-chain bridge thefts anymore. Anyway, the community's consensus on "waiting for confirmation" is getting stronger. As soon as an oracle reports an abnormal quote, everyone's first reaction is to stop and wait two minutes... I no longer believe in "being quick wins." Retail investors just need to understand how to avoid pitfalls and explain why they didn't rush in—that's enough. The rest is for the big players to compete over.