Running TikTok ads. 400 active sessions, not a single checkout.

Hey, I recently made a TikTok campaign with ad spend of 200 USD. I’m seeing around 400 sessions on my Shopify dashboard, yet not a single checkout. No one even added the product into a cart. Feels really weird overall. Should I narrow down the interests at the cost of higher CPM (my product is meant for gamers wanting their keyboards clean, keyboard related product)? Even with really generic target demographics, with this ad spend I’d assume at least some results.