You can't play carthage like any other faction. Its just impossible to win.First youre going to have to abandon two cities, thats right two cities.Get all of your units in corduba and in caralais and ship them to lylibaeum.
What kind of defeatist way is that?

What I did was to abandon Caralis, they simply had too few troops there. Send the troops from Caralis down to Carthage, build up in Carthage, including one group of elephants, and take it back within some years. Corduba has never been abandoned. The Spanish bribed it though when I was on my way to take Carthago Nova, but I will return and crush them. Caralis was ok to abandon, it was close and could easily be taken back. Corduba however is not smart to abandon, it is your stronghold in Spain, your way to weaken the Spanish and the Gauls as they continiously sends troops there...