so i'm fairly new to osu!mania and i set this map that 'im working on to 2 stars when it should be around 3 - 4.5 stars. could anybody tell me how to change a map's star rating so i could make the difficulty more accurate?
You can't manually change a beatmap's star rating. The only thing you can do is to map in a way that gives more star rating like using high SR patterns or having more note density.