[becausecurious]

I think "come up with an idea" is a wrong way to approach this. How many ideas did you test? I suggest to treat this as "fishing". People don't get "wonderful business ideas", people get some ideas and test them. Because how good an idea is depends on many factors and it can be hard for anyone to judge.

So I am pretty sure you are able to come up with ideas. Perhaps you just see them as "bad" and don't even try to test them. I would suggest you to find the most promising idea and think how you could test whether this is a problem other's might have. As you noticed, I used "problem" here, because ultimately you want to solve a problem.

If you struggle with finding problems, try noticing your own inconveniences. Imagine that you have magic abilities to fix everything, what would you change in your own life?