hi pathan welcome,
total count Normal is 20 million or more sperm per mL,
at least 50% should be motile one hour after ejaculation
pH should be between 7.2 and 7.8,
these factors are not suitable for you to become a father.
you are only 28 and do you on any medicine now?
the better medicine for this is ayurveda
we can do some panchakarma
also that is purification of body then go for internal medicine.
snehapanam virechanam,utharavasthy likr treatments
you can visit any good ayurveda doctor
since so many frauds are there
if not write to me we can discuss and come to conclusion