I just got educated by myself... I originally wanted to use some "wallet dust" to exchange for a small ticket in an obscure pool, but I impulsively went all-in at market price, with slippage casually set, the depth was thin, and I was stunned during the trade: clearly the price didn't move, but I actually received less, basically I paid tuition to the pool.

Looking back, there are three things: don't be superstitious about "just a little amount, no problem," the more obscure, the easier to get eaten; don't rush the order placement, first place a small limit order to test the waters, see the speed of execution and the depth of the order book; don't open too much slippage at once, it's better to split into two or three trades and slowly grind. Recently, I've been talking about rate cut expectations, the dollar index, and the mood where risk assets rise and fall together. When it heats up, I tend to slip more easily, so my current habit is: before confirming a buy, go get a glass of water, come back, and if I still want to buy, then do it... Anyway, those few seconds of urgency won't make much profit. That's it for now.