I've seen a bunch of tutorials on sandwich arbitrage. To be honest, after reading them, I'm even more afraid to touch it.

I used to think MEV was free money, but after looking at on-chain data, I realized that most arbitrage bots' gas optimization can be fine-tuned to eight decimal places. Ordinary people jumping in are just paying tuition to miners. Now with the unlocking of staking, there's so much selling pressure, the chain is even more congested. If you set the slippage a bit too wide, you'll directly become the sandwich filling.

Now I only look at those with real trading drawdown curves, preferably where the author has lost money themselves. Those that only talk about principles without sharing liquidation stories, I default to swiping them away as ads.

Anyway, my strategy is simple: if I don't understand the volatility, saving on fees is also earning.