Mob breaking blocks to reach target

I have an entity that should actively "mine" toward the player if there are no available paths to the player via door or no obstruction.

Currently, I have an 

"if 'is entity looking at block with raytrace distance 2, fluid mode n/a, block mode outline
do remove block at x, y, z and spawn break particles

else"

This is put in the ontick mechanism, but he won't even break any blocks regardless.

I am new to this, so I apologize if it's a dumb mistake lol.