In the evening review, I saw someone else watching the whale address and trying to follow the trade.

I first remind myself to stay calm: that large transfer coming in doesn't necessarily mean building a position, it could be hedging, repositioning, or even just moving risk from one pocket to another.
To put it simply, you're following the "action," not the "intention," and these two are quite different.
Recently, everyone has been complaining that miners/validators are earning a lot, and that MEV is causing unfair ordering.
I can understand that; on-chain it looks like the same path, but in reality, there are dedicated channels for the front of the line.
Anyway, my current approach is very simple: first assume I can't understand whales, open small positions, set clear stop-losses, follow a little if I can, admit mistakes if I’m wrong, and don't treat "seeing big players" as a signal to lose my sense of boundaries.
That's how I do it for now.