Recently, many people have been criticizing "unfair sorting," and miners/validators are making too much money... To be honest, you don't need to fully understand MEV; it's enough for retail investors to know "it will happen and it will affect you." Block builders + bundles, just think of it as: someone packages a bunch of transactions and inserts them into the block in their own order. If the order changes, your slippage, transaction price, or even whether your transaction goes through could change.

Do I need to research the list of builders and each bundle?
No, just remember: don't use market orders without protection during busy periods.

My bottom-line approach has three points: use private/protected forwarding whenever possible (at least don't broadcast your intentions to the entire network), manually set slippage and minimum acceptable prices for DEX trades, and avoid acting impulsively when funding rates and social media are heating up. The rest... don’t think of yourself as an engineer on the block production line; emotional management is more valuable than understanding the protocol.