Sir if sperm deposit or precum deposit is on the outer part of the vagina will it cause pregnancy or the penis have to go completely inside for causing pregnancy?

As long as sperm enter the vaginal mucus they can survive and travel inside to complete their goal of causing pregnancy. A few centimeters doesn't matter.

If the sperm was not deposited inside the vagina, pregnancy is unlikely, however, your behavior is putting you at risk of pregnancy and STDS. Visit this site for guidance on safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines Get HPV vaccine Use contraceptive all the time, every time. Wish you good health!