I'm in the process of downloading Dragon Raja and I'm having trouble thinking about a class to choose since I'm new. I would assume maybe a Warrior since they can withstand the most of attacks but I'm a bad tanker. Maybe Archer though I might have troubles finding monsters I can fight without dying since I'm not as tough. What do you guys think?

i think you should go mage
they can take a fair bit of damage and deal more then enough to survive

Yep. Mage would be easy.

And make sure you join Vyseus :D