It depends on what class you picked in the beginning of the game largely, and what level you currently are. Techies have the lowest HP pool, but rely on their super durable shields and bonuses to said shields. Smugglers have middling HP, but rely on their high evasiveness to avoid deadly strikes. Lastly Mercs have the largest HP pool of all, mostly relying on their high base HP and armor stats, as well as their high firepower and numerous regens to stay in the fight.
You can also opt to equip some gear with "Fortitude" for some additional HP, though for Techies, it isn't worth it since again, you rely on your shields in a fight moreso; best to stack additional shield points, and for Smugglers, you generally want as high evasiveness as you can get. On mercs it can be a worthwhile stat though.
Edit: Though even at level 10, my Steele has 100 base HP as a Techie, so I'm guessing you're not at max level yet to have under 80 HP.