Service for recommendations and feed like product

Does anyone of a service (saas) that'll provide feed/recommendation like product?

I'm building a startup that'll be a feed of "things" (think of tiktok/reels) these "things" show up in a person's feed based on what they've like and watched before, etc...

Is there a pre-built product that'll already do this work for me without me having to spin up my own ML backend?