Whom to consult. Also, whom to believe?

Hi,My sexual life was too good earlier,one day I got infection in my penis,after doctor consultation they told that it is phimosis due to diabetes and that day i got to know that i am diabetic.They suggested me for circumcision then I went to Delhi and got ZSR circumcision by Dr.Govinda Gupta.After that skin infection gone and phimosis also gone but even after 7-8 months of surgery also my penis glans sensitivity didn't reduced,I went again to Dr.Govinda gupta's clinic,consulted again and got medicines too but no use.As I am newly married person(1.5 years for marriage)we are planing for a baby so i tried several times to intercourse but before inserting my penis i am getting discharged.I am unable to perform well in bed,i am confused why it is happening with me?due to sensitivity or performance anxiety or excitement i don't know.Because of this problem i lost my money, precious time,and I lost faith in doctors also,whom to believe???please reply genuinely🙏 And save me