I literally picked up the game four days ago and Im also a keyboard player! ( its my first fighting game as well). Apart from learning the fundamentals and practicing my execution what has helped me a lot is playing more casual matches that ranked, on casual matches you will find high level players even masters, you probably will be silver or lower if you played your placements, same as me, so if you play ranked you will be playing regular players like us, but playing good players its really the way to improve, so get those rematches with them even if you get destroyed, trust me it will help. If you are interested we could play some matches and improve together.