Learn how to make friends first or learning manipulation to protect myself ?

Hello I am a socially anxious person.
I have spent over ten years unable to make friends or create fruitful social interactions.
I am also naive and have been the perfect victim for manipulators.
i have decided to change this aspect and become more social and more cunning (less naive)
Which is better in my case learning how to make friends first or learning manipulation to protect myself ?