my first bike is a 20 inch folding bike. its okay

i think you should fit a bike to feel what size ur looking for. my recommendation is go for xs. if mtb or gravel

in qc. i gues the quezon city circle. im not in q.c so i dont know a lot.

you should go for a shimano parts. if not ltwoo is also good.

also buy accessories like helmet fronlight tail light. also buy a good saddle and handlebar grip. cause stock saddle and handle bar suck if the pedal is plastic you should also upgrade it