the villagers invasion has several errors

The villagers' intelligence is extremely stupid. Sometimes they simply start running away from the village, they don't stay in the village. When zombies try to attack the villagers, they don't run away. Sometimes they stay still and sometimes they don't enter the houses. It's very easy for an entire village of villagers to die alone because their intelligence is stupider than Java's.
Another problem is the invasion where mobs spawn inside caves. With the lack of a resource that shows where the mobs are, it's almost impossible to fight an invasion due to the huge difference between Java and Bedrock.
To make these mistakes, just invade and you'll notice villagers not hiding properly, running away to random places, and monsters spawning underground.
Seriously, it's sad to know that until now we don't have the effect that highlights the mobs and the arrows that do this. It's sad to know that Minecraft Bedrock doesn't have the same development care as Java.