Can you get a woman pregnant from sperm left on toilet paper or toilet seat? what if the woman uses the bathroom right after i use it? i'm really scared?

Pregnancy is not possible in above circumstances. Hand hygiene rules still apply and should be followed consistently.

Dont be no sperms inside the vagina no pregnancy

There is no risk of pregnancy from the circumstances you described. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV vaccine. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines