Lately, there have been more instances of "queue jumping" on the blockchain.

MEV, simply put, is about who gets in line first and eats first.
It doesn't really affect the big players' share; it's more about ordinary people swapping small amounts, experiencing sudden slippage when adding/removing liquidity, or getting caught in a sandwich attack, which can be quite frustrating.
Recently, many testnet users earning points are the same—everyone is betting on whether the mainnet will issue tokens.
Trades have become more urgent and crowded, and the tighter the order, the easier it is for unexpected issues to occur.

To avoid impulsive trades, I have a habit: when I see something I want to chase, I put my wallet aside and go make a cup of water.
When I come back, I check the transaction and gas fees.
If I still feel it's a "must-do," then I proceed; otherwise, I split it into two smaller trades and take my time.
I'd rather earn a little less than become a fee-taking machine for queue jumpers.
Anyway, staking steadily to generate cash flow and sleeping peacefully are more important.