Hi! Welcome to the forum. Your beer is not dead, it's fine..... you had a warm vigorous fermentationand it's winding down/ finishing at present. This is common in first brews/new brewers. In the future look into temperature control for brewing and you will make even better beer. Something as simple as a swamp cooler or as elaborate as a spare refrigerator with a temperature controller/override.
I'd give it another week or so, then you could likely package it.