I'm old enough that I'm forgetting struggles. For example, I don't remember overcoming MOST zone defenses as that big a deal. That may be because we had a front line in high school that was 6'7", 6'6", and 6'3" and no shot clock.
But a lot of teams wrestle with zone defenses and traps because they lack an attack mindset, with no specific scoring intent.
The ball moves faster than the quickest defender.
Establish multiple options for passers.
Keep the 2 behind the 1 in the backcourt.
Move the ball quickly to distort the zone.
Flash into gaps.
Pass then cut.
"Drive for show but putt for dough." You have to finish the play, not just advance the ball.