You can request relays to delete now with some clients (maybe most, idk), but not guaranteed. Edit isn't a thing, at least not yet. Relays are decentralized so you would be asking all of them to change their database. Life isn't perfect, your post doesn't need to be either 🤙
Discussion
What clients? I use Blopstr and Coracle and seems I can't find delete button at all
Check out #2 and #3 in these FAQs for some tips on event deletion. 🤙