Bullies are themselves people with low self-esteem, that's why
they pick on people they perceived to be weaker than them..
A bully will not pick on one that is stronger because these
bullies know they cannot win.
Bullies are not up for challenges...Bullies needed to know they
can win, that's how they can feel validated.
Bullies are actually more socially flawed than the victims they
picked on.
For you, I think you lack social skills. Luckily, social skills
are acquired, no one is borned with social skills.
We all went through a phase of social awkwardness, then we
observe and we learn how to interact with other people. Then we
attain social confidence.
A child that grows up in an suppressed family environment , (
where parents do not allow freedom of expressions, more often in an
Asian family ).. typically do not pick up social skills untill much
later.
I suggest you read more to obtain a wide range of
knowledge...helps with conversation..etc..
Try to be more approachable.., be a little more adventurous...
etc.. helps to open up your personality.
When we are well prepared... we will feel safe.. and we will
dare to do more. Then your self-confidence will start to
increase.