Yes. There are many things we can do to improve sperm counts including: lifestyle changes, medications for erections or ejaculation, hormonal medications, and sometimes surgery.
A few examples of lifestyle changes are to exercise regularly, at least 30 minutes 5 days per week if possible; decrease stress, eat a healthy and balanced diet, lose weight (if needed), avoid substances and activities known to have a negative impact on male fertility, like tobacco and marijuana use, certain medications, regular use of hot tubs; avoid medications or supplements that contain testosterone or its precursors (DHEA).