HI about Sperm

It is quite possible that you have less sperm due to you undescended testicle. Due to this problem, you may be producing less sperm, the motility of the sperm may be slower and the amount of sperm less.
The problems occur because the testicle is in the body, where the temperature is higher than testicles need to produce sperm. Testicles need lower temperature in order to be able to produce sperm, this is the main reason they are situated outside of the body.
However, having one testicle undescened will not unable you to father. You may still produce enough sperm to fertilize an egg. The problem is that with having one undescendent testicle puts you at increased risk of developing testicular cancer, so you should be seeing a doctor regularly for a check up.
I don’t think that there’s a way to increase sperm amount with food.