Integrate RAG from vertex with Google AI studio?

Hello, looking to integrate google search with a multi step chat conversation for my usecase,

Tried using Vertex AI multi chat prompt, for my use-case, however everytime I paste my system instruction, the first few times no matter what I say it keeps repeating the time back to me(Screenshot - a7e2f2f8b77b6dc1e2fd931aa184a1d3 - Gyazo), or isn’t as conversational as google ai studio,the google search isn’t as effective as https://gemini.google.com/app

So I’m trying to integrate google search (from vertex or open to other solutions) with ai studio, I’m open to using vertex if it can become as conversational as ai studio, but that hasn’t been the case,

low code/no code experience, open to any pointers in the right direction