It seems that developers see it pretty hard to use the mob goal api, there should be a guide on how to use classes like
https://jd.papermc.io/paper/1.20/com/destroystokyo/paper/entity/ai/MobGoals.html
https://jd.papermc.io/paper/1.20/com/destroystokyo/paper/entity/ai/Goal.html

The javadocs aren't really great and there are no tutorials