Various factors can cause Warzone lag (including ISP throttling and congested servers). But there's one great solution to eliminate it a VPN. A VPN can hide your activity from your ISP and connect you to faster servers.
Call of Duty: Warzone Mobile, ever since it was unveiled at COD Next 2024, has faced multiple delays in its global launch. At Call of Duty Next 2024, developers recently confirmed another delay after announcing Spring 2024 as the release window for COD Warzone Mobile's worldwide launch.
Call of Duty Warzone is a free to play game. It's not on GamePass and it doesn't need Xbox Live Gold either. MW2 and its multiplayer component is not free. You need to buy it if you want to play the single player game or MW2 multiplayer.