reveal problem

[ferko2023]

My problem is that my NFT does not reveal automatically after the purchase, but if I click on the reveal button in smart contract, all of the NFTs are revealed. I would like only the purchased NFT to be revealed.
how to reveal only purchased nft with this contract: https://github.com/HashLips/solidity_smart_contracts/blob/main/contracts/NFT/NFT_REVEAL.sol

[PenneconDavid]

Hello! I'd be happy to submit a PR to address this if you'd kindly assign the issue to me.

Thanks!