There are a lot of ways of researching ideas, what works for me:
- setup a Trello board, post there each idea in a card, then you can arrange, demote, etc them. Your brain will know you are “hunting” for ideas, and will be working in “background”. Hopefully a few times randomly but steadily, you will be writing those down in the board.
- ask people about problems they have.
- subscribe to services like Opportunity Overload, they share problems everyday
- Look around you, trying to reinvent or improve things
- take a walk, don’t think, the ideas will come
Then, I'd read up on stack overflow guidelines for question asking, to improve your question.
I don't know how to help you because I don't understand what you're trying to accomplish, what you're trying to build, why you failed before, etc.
Chances are - thousands of others will say "thank you" down the road.