Tips for a new player?

So little backstrory i have 14 hours. I never get far and die to zombies or starvation & dehydration. Once i found a revolver and teamed up with a player. Then got wound infection and got surrounded so i k1lled myself infront of my buddy. It was hilarious. I can make a fire and cook some basic stuff but when i go inland i usually die. Any tips how to find loot and food & water and survive. Btw im very clunky player, just ketting on to pc gaming.