Facebook and google are not the only places to advertise.
Best you'll manage along those lines is approaching celebrities and youtube/insta stars and getting them to endorse your product.
Things change, and Facebook and Google are now the big players in online advertising, accounting for a large majority of the ad market. Other platforms exist, of course, but by cutting out Google Ads and Facebook you're going to be targetting a very different user base and are cutting out a significant share of the market.