Interested in DFO (Dungeon Fighter Online)

I posted this on their sub reddit but I am not sure how active it is. I downloaded the game about 15 min ago looking for something new to play. I just had a few questions. Should I play with kb/m or controller? Is there controller support? With the game being so old, should I start? Lastly, how p2w is the game? (I don't mind spending money, jw). Also, are there any streamers worth watching? Thank you!!!