So very recently, I started trying to map, I don't know how to time the bpm and the offset so i just set it to 180 bpm and didn't touch the offset, now I have made 25% of progress and realized that the bpm and offset may be wrong, I still have no idea how to time, I watched many tutorial videos and couldn't understand a single thing, please help.
Map: beatmapsets/1871540#osu/3850820
Map: beatmapsets/1871540#osu/3850820