Tried a lot of different nootropics over the course of 1 year while I was in the US. The trick is finding those that are easy to get and relatively cheap. So the ones I recommend are:

(1) Vitamin B complex. Can get in any pharmacy.

(2) Coenzyme Q10. Can get in most pharmacies. No need prescription.

(3) Racetams like Piracetam, Aniracetam & Pramiracetam (I don't know how to get in Malaysia, although someone here said can get in any pharmacy. Might also be able to buy through the internet, although it is hard to know whether the content is genuine)

They improved my mood and helped release unlocked energy.