I lost my first banner and 50/50 of Velina as an F2P player.

I am a beginner and F2P player.I was saving my polychromes for upcoming mommy Kafka.But rerun of mommy Velina ruined my plan.I wanted to try my 50/50 luck but it was trash.However,I won't pull in this anymore.I am going to save my pulls and going to take my beloved Kafka in my inventory.