Where should I put my emergency fund?

Happy 2022! As the title states, I’m having dilemma to choose whether I should put my emergency fund into one of these vehicles:

1. A savings vehicle with insurance. 1.5% p.a
2. A Robo Advisor to invest in US Equities with return of 8-15%, depending on which product you choose.
3. Invest into ETFs.

I do set my money aside for investing, so I was thinking which of these vehicle(s) could be the best place(s) to set my emergency fund, while (hopefully) growing it? Please do suggest some if I’m missing out.

I’m from SEA.

Thank you very much in advance!


Edit: Option 1 is the least appealing to me, but it provides protection. Ughh, it’s such a hard decision!