How to make my item place a block as if it was placed by a player?

I want my item to place a block as if it were placed by the player, but it instead replaces the block they're looking at.

I am using "Place [block] at x:[x] y:[y] z:[z]" and I used raytracing to get the position of the block, but it, again, replaces the block instead of placing one next to it.

Can anyone help me?

https://imgur.com/FAIS1NS