using Navmesh or ML Agent ?!

Hello Guys!
im trying to create a mobile multiplayer Game like battleLands royale. knowing that the Target Platforms are Android & IOS so The Goal is Performance!! for this im using ECS + C# job to build the most part of systems and for Networking communication im sending only inputs to the Server, so the server Validate's them and send them back to all clients for the simulation. ( no need to Simulate everything on server side before sync clients ) but thinking about the First Release and lack of CCU at the beginning, the only solution i found is creating NPCs that will imitate players and populate the match maker as fast as possible, but i never did that before and i found two promising ways: unity Navmesh System and ML Agent.

my goal is to Make NPCs acting exactly like Humain players No strange Movements + Using control inputs.

any suggestion is appreciated.
Thank you!