Occult Banner/Infinite felt so bad!!!

Okay gamer, I spent 150+ IRL hours grinding for Seiko from the Occult Infinite stage. I would do it at work, when I was home, and even when out with friends to ensure I had the best opportunity to get this unit. Diavolo wasn't even a concern for me in the slightest all I wanted was Seiko a 1.5% unit. After 150+ hours and 300+ stages finished I have nothing to show for it. For a 30 minutes stage this unit was way to rare. Between all my friends we got 1 Seiko with 500+ matches played between all of us. Is anyone else running into this same problem? She is now unavailable and I can't help but feel burnt out and frustrated with my doggy luck.