Is it normal for masturbating to hurt afterwards if not enough lubrication? or is something wrong?

depends on what you use. make sure it is not very hard or thick or have a pointed end and use plenty of lubricant. If it still hurts stop and see your GYN.

If you rub too hard or push objects into your vagina, it would hurt. If you are inserting things into your vagina. using a water based lubricant like K-Y jelly would help. Get HPV and Covid vaccines. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines