The first player tier in the DZ is levels 1-14, and so it makes sense to spend a good amount of time getting to know the ropes in the rest of the map. Wait until you're level 13 or 14 before heading into the DZ, as you'll more likely be accustomed to the game's mechanics and have a better chance at surviving with your equipment, as well as being on the latter end of the level requirement for this tier. Head in at a lower level and you will almost certainly struggle massively (especially without a team), but by this point in the game, you can start making decent headway.