Many online multiplayer games have strict anti-cheat systems. Using mods can lead to a permanent ban from the game's official servers.
Modifying software without permission violates copyright laws and deprives developers of the revenue needed to maintain their games. Popular Alternatives in the Modding Community Newmodgames.com
Happymod : A large platform where users can upload and test various mods. Many online multiplayer games have strict anti-cheat systems