How to keep track of button order and timing in osu?

Solution 1:

It ultimately comes down to memorization. Just like playing music, it's very difficult to get everything on the first try, especially on harder difficulties. You need to play through a song a number of times to let muscle memory set in.

Solution 2:

This kind of confusion is caused by low Approach Rates.

The approach rate is the speed at which circles close. This typically happens with easy/normal songs and songs with the Easy Mod. Try to look for songs with an AR higher than 7, once you get more accquainted with AR8 and higher you should be reading naturally. Once you read AR9, you should be able to read every map perfectly on your first try, except for some weird combinations