Last night, I saw someone rushing in during the congestion to change orders and chase prices, only to get stuck for a long time and become more anxious.

Mempool queuing, to put it simply, is that after you submit a transaction, you wait at the door for your turn: the more people there are, the slower it is, and the more anxious you get, the easier it is to impulsively click "again," ultimately turning into a cycle of self-torment over the same issue.
Don’t interpret “not executing immediately” as the market targeting you; most of the time, it’s just traffic congestion.

Recently, I’ve given myself a mental “version update”:
v1.0 is scolding the chain while watching the progress bar;
v2.0 is thinking through two possible outcomes before placing an order — either waiting in line to complete the transaction or canceling after a timeout — both are normal processes.
The macro discussions about rate cut expectations, the US dollar index, and risk assets fluctuating together are quite noisy, but no matter how loud the noise, your trading discipline shouldn’t fluctuate with it.
If you’re anxious, just sleep first; wake up and check again, really.