I just closed that MEV page... Looking at it for a long time can easily make your mindset drift.

On-chain "arbitrage opportunities," you think you're picking up money, but often you're just handing knives to others + paying transaction fees.
A sandwich is made, the meat is yours, the oil is theirs.
To put it plainly, the excitement is yours, the profit belongs to them.
Recently, I heard that some regions are increasing taxes / tightening regulations, and discussions about deposits and withdrawals are getting more intense in the group.
When expectations tighten, slippage on-chain is more likely to be amplified, and when you're anxious, you're more easily caught in the trap.
Anyway, I now place orders a bit slower, and if the spread isn't attractive, I just give up:
Watch the K-line like a peacock spreading its tail, but don't let the K-line make me open my tail.