If you're that squishy, you're not covering all your bases as far as preparation goes. Cooking, Forging, Brewing. I was chewing on Cooked Lox Meat and knocking Needle Arrows before I even killed Bonemass (Not bragging just perspective). Also, you can take Deathsquitos out with a single wooden arrow. Hard to miss as they fly straight at you. Perhaps practice awareness of your surroundings? Use sound? Sneak? The devs did a great job giving us the tools we need to survive without spoiling the fun/thrill/challenge of learning to adapt to each situation we're presented with. If you're just blind, turn vegetation all the way down. It makes spotting enemies so easy it feels like cheating.