[Andrew WCY]

No, you're definitely not the only one who plays on downscroll. In fact, there are lots of downscroll players in FFR and other 4-key rhythm games. I'm a downscroll player myself, and I cannot read upscroll, just like you.

Personally, I do not believe there's such a thing as playing 'normally'. While it might be common for FFR players to use upscroll, if the mods you use help you get accurate plays, then there's no need for you to switch to use other mods, unless you're looking for a challenge or you think they would help improve your performance.

Some players might become accustomed to one particular scroll direction from the rhythm games they've played. As an example, DDR, ITG, and Pump It Up use upscroll by default; Guitar Hero, Beatmania IIDX, and Piano Tiles use downscroll only. Some might also be able to read in both upscroll and downscroll. For others, they simply prefer reading in one particular direction.