JIRA because one has to at $JOB. Personally I have the hardest time with breaking down in the sense of having a good estimate. Breaking down in terms of screen

JIRA because one has to at $JOB. Personally I have the hardest time with breaking down in the sense of having a good estimate. Breaking down in terms of screens/pages works super well, backend vs frontend tasks. But more than that I have a hard time. The details I mean. Ideally I would prototype, throw away and then do it properly. I'm very optimistic and create only 3 or 4 tasks, in the end its always 12 because of details that I missed.