Case Study - Product Launch for Newer Brands

Product launches done in the last 6 months preferably on a non mature brand. But it'd still be massively valuable to share even with a mature brand. We all know how established brands can do it - What about a new brand? no list, and 20k in cash. What does someone do in this situation to maximize growth and launch products? Many have struggled recently trying to launch adjacent products that aren't our exact brand avatar and its much harder when we can't use our brands assets.