Why don't they? What do they use instead?
Palestine is not only without forests but semi-embargoed; it looks from the news footage that cement block or hollow brick are common.
In the far past, stone was common; and indeed, today it's cement and hollow bricks. Both in the 1948-occupied parts (= Israel) and the 1967-occupied parts.
https://en.wikipedia.org/wiki/Syrian-African_Rift_Valley
we have very-minor earthquakes occasionally, and I think a major earthquake once a century or so.