Lately, watching on-chain transactions, sandwich attacks and arbitrage are really discouraging: you think you've found an opportunity, but often you're just helping others cover their fees. To put it simply, if you place a market order with a large slippage, the robot treats it as if you're throwing money on the street... I now prefer to put "can I make a profit" second, first checking whether this transaction in the mempool will become someone else's lunch. Meme and celebrity pump calls have more obvious attention shifts; newcomers impulsively jump in and easily take the last hit, ending up with transaction details full of "unexpected losses." Anyway, I prefer to go slower: limit orders, small slippage, batching, better to miss out than get caught in a squeeze.