Oversimplifying for sure but if you're loose and aggressive against a tight aggressive player, you're going to make them fold most of the time and win a small amount by applying pressure on bluffs but every once in a while if you get too aggressive and they call you because they have a monster hand then you get wrecked

Aggression generally wins the day but pay attention to the size of the bets and their position. Generally, you want to make a lot of small bets to show action (they can fold for a minimal investment) and leverage table position to make other players make hard decisions.

In poker, like in trading, the key is knowing when you have an edge and being aggressive but also knowing when you have a losing have and cut your losses. It's the balance that makes a good player/trader.