I downloaded the Bitkeep app, the team have really done a neat job, wallet is very user friendly, with lots of functionalities....
Maybe you should try having an NFT marketplace integrated into Bitkeep
Bitkeep already have third-party NFT marketplace platforms on it app, to visit any of these marketplace.....
On app, click on Dapp, on the top bar, click on NFT, here you see list of various NFT marketplace