I'm asking this because I'm very determined to start a business, but don't have a clear idea on what to do, and by using this approach I could possibly get some investment if I execute in a high-quality manner.
No, it's not a good idea. Every successful or even somewhat successful venture I know of was started either because the entrepreneur had observed and then confirmed a specific pain-point in a market that was unaddressed or that entrepreneur was "scratching their own itch" solving a problem they had themselves that others had as well.
Unless you already count VC's and angels as friends, the idea of trying to get meetings with VCs or angels to ask them what you should build is really a waste of time, as they are unlikely to give you their time.
My best advice beyond what I've written above would be to immerse yourself in the world of startups, best by working for an existing, funded startup. You'll develop a network and a lot of valuable experience about what it takes to take something from idea to product market-fit to a growth-stage company that will be really beneficial to when you evaluate whether you want to run your own journey.
Best of luck!