What or how should I start being active in investing? Where do I begin? I have a StashAway account which is not doing well these days and I would also like to be more active in investing.?

Better try 'passive investing'

i cannot tell you much what to do,

but surely what not to do.

you can find it here, just my own thinking:

https://seedly.sg/questions/what-is-your-genera...

when you can bear the risk of stock investing, and can let work the invested funds for 20 years without touching/selling them, and you look for a hassle free solution with presumably decent returns, maybe

MSCI ACWI ETF (tickers SPYY/ACWI)

is a good first choice.​​​