It is tough to get money in the beginning. Either you play with the strategy of your team members until they don't get killed or hurt too much and you don't need supplies, or you see what you can sell without hurting too much. Like Anise's doll-accessories. They can bring you a few thousand gald and the only one really worth keeping is the Reala one.

C-A

This is the most efficient way to earn lots of gald in this game.
The weapons are cheapest at the end of the game. Equip Jade's "Emperor's Best
Friend" and buy as many silverware weapons (Knife, Spoon, and Fork) in
Keterberg as you can, then equip Anise's Cat costume and sell the weapons in
Engeve. Lather, rinse, repeat (auto-pilot shortens the time considerably). You
might need to have done some sidequests that affect Keterberg's TLP to get the
weapons low enough to make a profit, though I'm not sure. You should be able
to buy the silverware weapons for 43650 gald and sell them for 50124 gald. If
you buy and sell 16 of each (which runs you about 2.1 million gald) and sell
them all you'll make 310752 gald each trip. If you can buy 20 of each weapon
(which costs 2.6 million gald) you'll be making 388440 gald each trip.

But the above post ONLY applies to the end of game early on I only got my gald from bosses including beating the 1 time only Sword Dancer battles.

Besides I only got the 2 million gald to buy and sell those worthless equips via a 2nd full playthrough since I barely had 400,000 going into the final dungeon.