Matchup.help-Italians vs mobile civs like huns, Mongols,franks,etc.

I'm having a lot of trouble in these matchups.

I protect one area with army,they arrive in another.My army takes ages to get there.

I'm going elite genoese crossbow+ halbs + trebs.I protect one area,another is getting rekt

If the civ has siege ram it is especially bad.