I'm not very good at explaining those low-level details, but when it comes to block builders and bundling, retail investors really don't need to dive into the "who's running what algorithm" level. You just need to know: the transaction you send may not be included in the block in the order you want, someone will bundle a series of transactions to manipulate the order, front-run or back-run you to profit from the spread, especially when you're chasing gains or panic selling with large and urgent orders, you're most likely to be targeted.

For me, three points of understanding are enough: first, don't use too loose slippage; the looser it is, the more it looks like you're showing your cards at the poker table; second, don't go all-in on small pools with low liquidity—breaking orders into smaller parts or splitting them up slowly can actually save you money; third, if you can use private/protected order submission methods, do so (don't get hung up on terminology, the core idea is not to let your transactions run naked into public pools). As for the recent daily debates among L2s about TPS, fees, subsidies... honestly, no matter how fast or cheap it gets, if you impulsively send yourself into a trap, the small savings in fees won't even cover the tuition. Keep your hands steady first—it's more reliable than studying a bunch of technical terms.