I recently did a simple 5E based Star Wars RPG based on the first SW d20 rules (the ones with Wounds and Vitality). There are plenty more complex and comprehensive versions about on the internet (heck, you could use Esper Genesis* if you want something published, the QuickStart is free on DTRPG).
*Esper Genesis isn’t SW but it’s very adjacent and you could use it for a non-standard setting like the High Republic or suchlike.
Sadly I have no idea how well all of these work (not least my own game) and what might be more or less annoying about them.