Masturbation reduces the amount of ejaculate that you see. But this is not the same as sperm count. Sperm count refers to the number of sperms present in a given volume of semen whereas what you are referring to is the volume of the semen. Some reduction in sperm count also occurs but it does not dip below the normal range and is of no consequence. It is temporary and improves with abstinence. The volume of ejaculate also improves with abstinence. In short, you need not be worried about the effects of masturbation.

Hello dear
Understand your concern
First tell me how many time you are doing masturbation in a week. 3-4 times per week is completely normal and odes not cause any side effects.
Following are the side effects of excessive masturbation:
Drowsiness, Weakness: due to loss of protein and calcium, Back pain, pelvic pain, Testicular pain, May be decreased sperm count, Psychological side effect
But all this side effects does not occur in all individual.
Do masturbate alternate day. And if you have anxiety than go for seminal analysis for check the count.
Masturbation does not cause decrease in sperm count but anxiety, stress and overthinking lead to decrease in sperm count.
Eat healthy diet rich in protein like egg, milk, meat and chicken.
Tablet revital, antioxidant rich items like fresh fruits, almonds and Co Q tablet. Do regular exercise daily in the morning for 45-0 minutes.
Hope this may help you
Best regards
Dr. Sagar