Recently, I've been watching on-chain transactions, and sandwich attacks plus arbitrage are truly everywhere.

You think you've caught a small slippage opportunity, but the moment you click, you're actually paying someone else an "invisible fee."
To put it simply, you're bidding, others are queuing and cutting in line, and you're responsible for the payment...
Now I always take a second look at gas and depth before placing an order.
I'd rather do fewer trades than become a liquidity buffet.

Airdrop season is even more obvious; everyone is being managed like clocking in at work with points systems, and task platforms are even anti-witching.
When the rhythm tightens, on-chain activity gets even more crowded, and the MEV folks are even happier.
Anyway, I’ll just take a more relaxed approach: set limit orders when possible, split orders when possible, and don’t go head-to-head with congested blocks.
Talk again next time.