People say it's easy to chaff/notch the Sapfir radar on mig23s and their r24r's and somewhat I never succeeded at it

Why do people claim that the r24r is easy to chaff and the mti mode (Not doppler effect- can’t notch) is also easy to notch? I’ve deterred F-16’s sparrows by chaffing a lot and not even notching, but the r24r seems to pursue relentlessly regardless what I do, even at high altitude where the ML radar is supposedly only concentrating all it’s power on looking down and THUS should be easier to chaff.

Because they do get their fingers out of their butts,…

It’s not hard to defend anymissile, when using the good method,… learn the methods that’s all.