Build the 3D lobby for a mobile game

Hi, We need someone to build a 3D lobby for a Third Party Shooter mobile game. Lobby needs to be very attractive and engaging and offering the functionalities like 1. map/room creation & selection, team selection, character selection, weapon selection, game start, leaderboard etc. References: PubG, Call of duty etc. It can be a 3D background with very attractive button, menu, checkboxes etc. with a good UX and swift user journey. Need to be very creative here to give the best experience to players. Please note, the game is intended for unity platform and design compatibility should be there. Thanks!