What can I do with 4lkhs?

Hi, I'm 20(F) and I have saved up 450,000.

I'm a resident visa holder in Sri Lanka and have only been staying here for a year. I want to use my savings to earn and start something but don't have any idea what or how.

Please give me an advice. I have read about Index fund, High Yield Savings Account, Roth IRA, ect. But don't have any idea where to start in Sei Lanka.

I'm thinking of investing in local businesses too, preferably on young entrepreneurs and small businesses but dont know if thats a thing here. Is here any platform where I can find businesses in need of funding?

I'm not tight on money since I'm still not financially dependent and live with my parents so I feel like this is my chance to grow and multiply what I have comfortably.