I try using this and the first thing is "Make a plan!!!"

I dont get what I'm meant to do, that's why I'm trying planning apps. I dont know how long things will last, what I'm meant to do tomorrow. How do I even approach those problems? I have 50000 things to do. I wont know how long they take til they're done, and I dont know what I'm doing one or two days away because I'm not there (particularly when it asks you to plan work on a weekend when I'm not at work so I dont know what my demands are)

Starting with the app and the first thing its doing is make me bounce off by expecting me to be able to do the thing the app is meant to solve.