Small businesses on TikTok are telling their customers about their worst business struggles.Ake/Getty ImagesSmall businesses on TikTok are telling their customers about their worst business struggles."My small business is failing" and other messages have become common hooks.It's a good way to build authenticity, marketing experts say — as long as it's done smartly.In the last couple of years, small businesses have littered TikTok with confessionals."My small business is failing," is how they often begin."If you've been following me for the last couple of months, you may think that it's not," craftsperson Laura Craine said in a post last year.