I am in need of a land page for my project with a random mint functionality for 10k nfts, and a marketplace for them, we have a playable demo, whitepaper and token in presale

I’m like with the playable demo, have the “land”page that I’ve manage, look To manage it in time, I can give u the nft art, and I need is the smart contract for random mint functionality of the nfts, to be able to manage like mystery’s boxes in our platform.