He used Clomiphene two years his testosterone normal but he has low libido do u think clomophin make testosterone normal but make low libido?

No. Clomiphene is used off-label to boost testosterone in those who value fertility. Clomiphene will not directly affect libido but may do so via T. Many variables may affect sex drive eg stress (work, family, money etc), depression, medications, etc in add'n to low T. Wide variation in normal reference range such that normal for one person may not be normal for someone else. Perhaps excess Estradiol.