all u need is confident. Every person have their own opinion, if you care too much on other people view. Eventually, u can't be the true you. The most attractive part about people is being their unique self.

a ) is wearing a cap/hat ( confused ) normal in public ? or even in shopping malls ?
Outdoor normal, indoor..no purpose except for fashion.

b ) is wearing headset outdoor normal as well ?
bluetooth handfree is kinda general nowadays.
a stereo headset might be music lover or trying to ignore the world.


c ) is wearing jacket/hoodie makes me look weird or fugly ? o.o"
Depend.

d ) what kind of accessories can a guy actually wear and look normal in public ?
t-shirt + jean/short


e ) where can i buy clothes and jeans outside with a reasonable price ( my budget per cloth/jeans is 100-200 )
supermarket, just look for 50-80% discount.

f ) is there any good looking belts out there , i need some recommendations please ?
no idea.

g ) which glasses' brand is good looking and comes with reasonable price ( 200-500 )
no idea, im not a brand lover.

h ) where can i find a good barber / hair styler or whatever ( i dont know who they are >< )
walk by a saloon, if u see decent amount of customer inside, they probably good.