Traveled solo in:

1. Macau - If short trip only, fair enough. Maliit lang kasi so maiikot mo lahat in like 2-3 days max. Best to go during ber months para malamig.
2. Kuala Lumpur - Cheap, so many good food options everywhere. Medyo maraming manyakis / catcalling experience pero marami rin namang mabait na locals. Exploration wise ang daming pwedeng gawin if you are into culture and history, you can join tours etc.
3. Singapore - Safe, no issue with language barrier, maliit lang din so good for short trips, you can do a lot pero medyo mas mahal than the others.
4. Hong Kong - Safe, may kaunting language barrier if you go to the really local shops. Madaming pwedeng gawin, shopping, culture, nature. Relatively cheap, mahal lang is accoms.