Elena ``of Valhalla'' (nprofile…wwlr) nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq645pwctkz969g97x0paepm3jwgmyepjgfmzl96ek5ec4a0q6fdyswavzzc (nprofile…vzzc)
The Sumerians, then the Egyptians, but it's the Phoenicians or the Etruscans who first had an alphabet* as we know it, and they wrote right to left. Then the Greeks adopted the letters but wrote them backwards, left to right.
https://www.superprof.com/blog/why-are-semitic-alphabets-written-in-the-opposite-direction-of-our-alphabet/
Romans (much later) also wrote on wax tablets for everyday notes. I mean, who had time to carve everything in stone?
*The word 'alphabet' is from their first two letters, aleph or alif (cow), and beth (house)