Title should be DanceCap - 2, the video you're using for metadata at #4745411 is a third party upload and they don't say where they got the name from.
There are official sources with the song name here and here, and it's DanceCap - 2
missing instrumental in tags for language
remove miside and easy from tags, it's already in source and "easy" doesn't seem relevant here
GD should be era trooperr, you need their full user
Mita AIHASTO Reihynn era trooperr instrumental video game anime cappie Мисайд Мита Кепочка
Audio is okay, but I found a better quality audio for you to use.
As well as a hitnormal you can use that sounds better when hitting a note
When changing the audio, go to the .osu notepad and change AudioFileName to audio.ogg.
The new offset will be 275
ONLY DO THIS AFTER ALL MY OTHER MODS ARE LOOKED THROUGH. LEAVE THIS FOR LAST