A running game, not a stepping game
The first thing to establish about the chicky run game is what kind of machine it is, because people arrive here from Chicken Road 2.0 and assume they already know. They do not. Chicken Road is a stepping game: one press, one lane, then the game waits for you as long as you like. Chicky Run is a running game. The bird goes. The multiplier climbs while it goes. And your job is to press cash out during the motion, before the run is stopped for you.
That single difference reorganises everything. In a stepping game there is no such thing as being too slow, because nothing is moving. In a running game, slow is exactly the way you lose. The multiplier does not wait for you to finish deliberating, and the moment you spend deciding is a moment the game spends advancing. Chicky Run belongs, mechanically, with the crash titles on this site rather than with the other bird.
So operate it like a crash game. Decide before the run, not during it. Know where the cash out control is without looking. And treat every extra second of hesitation as what it actually is, which is an unpriced bet you did not consciously place.