Within a weekend's work, I was able to put together a working MVP. It was a simple product - Allow users to update votes and save them securely.
The product is build with NextJS for frontend & backend with firebase as storage. Soon I realized that there were performance issues with the stack I chose.
So, with the help of a friend, I rewrote the backend in GoLang and replaced firebase with a SQL database. This made the product 10x faster than previous. And at this moment I was confident about the product.
Over the week, I also got some feedback from some close friends, fixed a bunch of issues and tweaks some parts of the product.