So much for Hebrew originals, then.
Well for that matter, originals of anything - including Greek (except for fragments of either). Everything is now copies of copies.
But there is Shem-Tov's Hebrew Matthew, and a possible Hebrew manuscript of Acts alluded to.
Even so, the missing originals doesn't prevent scholars from restoring the original Hebrew meanings to the Greek translations "coined" to express the Hebrew meaning as much as possible, but at times failing.