Don't know what problems are worthy of solving. How would you approach this?

We've all heard this: Don't create solutions looking for problems. Instead, find a valuable problem first.

But pinpointing the right problem is tough.

I got stuck at overthinking: what is a worthy problem?

Right now, I'm thinking two potential ways out:

1. Build and publish as much as possible on any idea crossing mind. I hope this will help increase the surface area of getting lucky.

2. Do whatever I can to make the first dollar online.

How would you approach this? Any insight is appreciated!