Questions to the Muslims Living in Hong Kong, how much are halal food available?

One can just put the label 'Halal certified' but how would you trust that? I have a chance to go to HK for university this year and one thing I got scared of is the halal industry, from a video by onepath network.
It is difficult to trust just about any 'halal certified' food items since many of their standards don't actually comply with the regulations.

Is seafood or fish available widely?

(Edit: Okay I am stupid, HK is literally beside the ocean/sea. Also thank you guys for the responses, my anxiety is dissolved. )

Is getting chicken that are halal, maybe not restaurants but to cook for yourself, available?
Suppose might have to turn into a vegan, Would be difficult but okay.
Thank you, Jazakallahu Khairan.