Hi
Welcome to HM.
I understand your concern.
Free communicative and mutual understanding will help
Sex is mutual act
so try to do mutually and tell your problem to partner.
Gradually involve in sex with proper knowledge is essential.
Try to read from net and learn from video.
Education is must so both of you require proper learning.
Psychological
stress and fear can be problem in your sex life but love and intimacy between you can solve it.
Trust is also important.
Long foreplay with erotic material can increase desire.
More lubrication in vagina can help to insert easily and without pain.
So confidence and mutual understanding will help.
Gradual dilatation of vagina by finger start from little finger to middle finger will stretch out vagina and it help for sexual intercourse.
Still have a query then feel free to ask.
Happy to help you.
Thank you.