You are receiving many good feedback. I seconded many of the comments - there is no right or wrong with investment returns and you should have your insurance coverage settled first (particularly healthcare and term insurance for yourself if you have dependents to care for).
In general, the market law is high risk high return and low risk low return. It is difficult to make a broad brush judgement on your return. If you are investing in Singapore shares only, I will suggest you benchmark against STI. If you are struggling to beat the STI then it may better to just buy the STI ETF and ride with the market. It will save you time and efforts to analyse individual stocks.
As a suggestion, you may want to consider a basket of SSB, SG Bond, REIT and STI ETFs - to diversify your risks. From Stockcafe, you can see the volatility of STI and it is not low. Volatility = risk. If you are investing only in SG shares, then we need to be able to stomach that volatility. However, if you are more risk adverse, then the basket as I mentioned above may help to buffer that volatility and give you more steady returns. But as the law goes again, you should expect a lower return in the long run.
Hope this helps.