Dived for a long time, but I still can’t help saying this: block builders and this whole bundle setup—retail users really don’t need to force themselves into being “insiders.” You just need to know two things: (1) the transactions you send may not get added to the chain in the order you want—someone in between can bundle, jump the queue, and even treat you as “sandwich” to skim a bit of slippage; (2) the hotter the chain gets, the more obvious the order-and-bundling game becomes—especially around major events (like the recent upgrade/hard fork/around the time of downtime maintenance on a mainstream public chain, when everyone was arguing about migration).

In plain terms: don’t overthink who the builder is or how the bundle gets assembled. What you can do is—use fewer brainless high-slippage trades, don’t chase massive-volume K-line candles with market orders, split important operations into batches, and use private/protected routing whenever you can. The rest is discipline. Once my emotions flare up, I go wash my face, and then I place the order again.