Why Is There Difficulty In Conceiving Despite My Semen Analysis Report Being Normal?

Hi doctor My semen quantity is 2ml Sperm count 90 million Sperm per ejaculate is 180 million Percentage motile sperm is 66% Rapid liner peogression is 21% Slow non liner progression is 59% Non progressive is 20% Sperm morphology is 50% Head abnormality Large oval 10% Small oval 20% But my wife is not conceiving Please advice medicine if any shortfall in my report.