Any possible investments that are low-risks but guaranteed with high returns? (Aside from investing in myself)

Corporate bonds with established firms of strong track record. but you will usually need between $50k to $250k quantum. also note not to buy a1tier bonds if ur looking at low risk. banks like credit agricole and hsbc are offering 5.5% pa for their bonds

Realstically no. Risk and return are correlated

Depends on what you mean by high returns. High returns come with high risk.

Risks and rewards are a trade off. But if you start saving and investing early, even with small amounts, you can let the magic of compounding work.