This isn’t really that much of a tip, but there’s a secret thing called one-hit protection, which is where as long as you are on full health, an attack from an enemy won’t kill you in one hit. So when you’re in a fight with strong enemies with no armor and with a total amount of hearts that isn’t enough, always heal yourself to full so you can survive an attack. After all I try parrying attacks or I dodge the wrong way and I get hit.