L2 transactions help

I’m currently working with an L2 blockchain (not matic).
They have an NFT on their native chain I would like users to be able to purchase it in the scene.

What is the simplest way to buy an NFT with the minimum amount of steps?

  1. Should I edit this:
    GitHub - decentraland/decentraland-l2-utils

  2. Or will I need a customized server?