Welcome to HCM
We understand your concerns
I went through your problem description. Your foreskin is fully retractable with the help of some lubrication, or without it. You had seen in movies right. The shape of an erect penis having retracted foreskin is such that there is a cap over it. You can also have it.
If your foreskin is too tight, you can have a minor surgery called circumcision
. First try retracting over and over again without hurting yourself. use some oil as lubrication.
Hope this answers your query. Available for further clarification.