How to defeat late game Carthage in the field? (multiplayer)
I am playing a multiplayer game as Rome with my friend as Carthage. He has categorically won almost every single field battle we have fought. He even nearly beat me when I was ambushing him, I was only saved by outnumbering him enormously. I am running out of legions and I can't recruit more because I am out of generals.
He is mainly using African Pikemen, Sacred Band, Libyan Peltasts, Noble Cavalry, and War Elephants. I really don't know how to kill any of it. His cav is so fast and deadly that its almost impossible for me to keep my Velites alive to actually shoot anything. I've tried wide front formations and closed boxes and everything in between. In open formations he just envelops me with the cav, while deleting my Evocati from the front with Pikes and Sacred Band, and when I tried a closed box, he just sat and softened up the front line with peltasts before charging in with elephants and totally disrupting the whole formation.
I gave up on roman cavalry a while back after they consistently failed to be able to defeat even his ranged peltasts. I've got Praetorians now who hold out for a while, but I can't keep any other units alive in the battle long enough for them to be useful. I have an army of 100% Praetorians on the way, with another of 75% praetorians and the rest velites, so I can try some different strats, but I am running out of ideas here. Any suggestions are welcome