Yes, unfortunately it's not going to pick up anything that's brand new immediately. Once it ranks for the term "vibe link" it should redirect there.
DDG is the primary fallback :)
This is really just a fun little experiment, I'm not sure if I'll be adding any more features. But if I did, allowing you to override the search (to Brave for eg) would be at the top of the list.
Why not just store the links in a DB somewhere? It would be cheaper than sending them off to a LLM and it would be consistent enough to send to someone, instead of being like a Giphy random thing.
Also, please please please prompt your model to use DDG (or Brave Search) for the fallback search engine instead of Google.