Is a Adam king a good survivor main?

I'm not sure if you mean Adam Francis or David King, but the answer in any case is: Ultimately, all survivors have exactly the same capabilities and options. You just have to unlock perks for the individual survivor you want to use.

The general rule of thumb, in terms of individual survivors, is that the male survivors are larger and quieter (with some exceptions cough JEFF), and the female survivors are smaller and louder. The best thing to do is just pick someone you like, and build them up. I use Claudette cuz I'm a red rank ninja, and Kate because she is naturally the quietest of all female survivors when injured.

And, if you are just looking for a good survivor to start with, David King has We're Gonna Live Forever (which helps you grind Bloodpoints faster) and Adam Francis has Deliverance (which gets you a free self-unhook as long as you aren't the first one caught and manage to unhook someone else).

I think the best survivors for new players to start out with are Dwight (to unlock Bond as a teachable perk) and Feng Min (because all three of her perks are exceptionally helpful when you are just learning the game).