Does it have anything to do with writing with your "right" hand. (Righting?)
No. It's from Old English writan, with various Germanic cognates, with a meaning derived from scratching/etching, which is a common meaning-source for Indo-European words for 'write'.
Nothing to do with 'right', which appears to come from Old English rehte, related to modern German richtig.
You might have some luck crossposting this to /r/etymology.