how to forbidden some entities to path through a block

[tulip briar]

for example, forbidden player to path through a block, but a zombie or an arrow can

[craggy kernel]

For preventing players stepping on a block, it would be pretty difficult. Is it a custom or vanilla block? As if it's a custom block, I'd probably wait for custom components and use on_step_on to test the players location on the block, and apply knockback accordingly to get them to go the direction that gets them off the block quickest

Im not sure how well it would work though, I'm sure there's a better way