How we spent $500 on TikTok ads and got 0 active users

I would have loved to share a success story like this one: https://www.indiehackers.com/post/how-this-chrome-extension-acquired-150k-users-with-tiktok-2bec088c92

but that's not how it turned out :) Hopefully this is useful for people thinking about running ads on TikTok!