[davismwfl]

Two most common ways:

1. friends and family round.

2. Prior entrepreneur with a known or provable solid track record.

My guess for OP is #1 given the question, but maybe not.

Also, this actually used to be a fairly standard way to raise capital 20 years ago, you'd go to angels or other high net worth individuals with a basic business plan and pitch deck and raise on an idea and team. You might have mock ups (or non-functional prototypes) and/or a really basic product started but rare it would even be classified as an MVP in todays terms.