These days I've been looking into block builders and bundles again. It feels like retail investors really don't need to push themselves to become researchers. Just understand: the transactions you send out don't necessarily get included in blocks in the order you want; someone might bundle, cut in line, or insert a transaction, all for the simple goal of earning a bit more. So don't blindly trust "my transaction will be executed once I click," and avoid using overly aggressive slippage during high volatility.

For what we need: 1) For large or sensitive operations, try to use protected routes (private/protected routing, etc.), 2) Don't pack too many obvious intentions into a single transaction, 3) When you see the transaction price on-chain always a bit off, first suspect it has been "optimized," and don't immediately think you're bad at it. Bundling is like carpooling or a delivery locker—putting many orders in at once, convenient but also easy for others to cherry-pick the best parts.