Struggling with feminine and masculine

I am a native English speaker, learning German in Babbel- I’m in the beginning and working on Kein/keine… I cannot for the life of me recognize if a word is masculine/fem/or neutral. I’m unable to get past this because I couldn’t tell ya which one is correct. I’m looking for an easier way to at least get familiar with identifying these. This feels like my first roadblock that I am stuck on. I’d appreciate any tips!