[2023] What can I do against Aquarius?

I’m in a game with my friend, it seems that I have the upper hand on the middle and the left side, but he is conquering on the right. I put some catapults with the hope that those kill his tridentions, but they don’t one-shot them… I think some cities on my right are gone. Do you have any suggestions about how to win and become more powerful? I have many of those battleships, but he’s spamming tridentions and has a lot of them already, I can’t enter a city, because he kill every troop who enters, I tried with that capes, I don’t know if they are called so, but I meen the troops that are invisible to him and can infiltrate a city. It didn’t work; he kills all the troops in 1 turn with his tridentions, also I’m getting lower on the left and middle; he’s killing all my battleships, please help me! I’ll try to take tomorrow a screenshot and upload it, I’ll be very grateful for any help.