I can accept the cueball being kicked into the pocket breaking a cluster, or something like that but it's carelessness that caused that miss, it means I didn't follow my whole shot routine, shame on me.
Gotta keep conscious thoughts out of it. Practice until the point you perform. Automatic. Overthinking causes as many misses as underthinking. Can be undecided on how to hit the cueball and that's all it takes to miss.