Faraaidh and Sunnats of ghusal

Q: In fard ghusl under the shower is it possible for any hair to remain dry?

Q: Do you have to gargle in fard ghusl or can you just move water around in your mouth like in wuduh?

Q: If a person did not know the fardhs of ghusl for years and would just take a shower when needed ghusl, and he may have gargled mouth and blew nose in the shower but don't know 100%, will the salaah, saum etc of all these years have to be repeated?

Q: I soaped my whole body and rinsed. Is my fard ghusl done?

Q: I am suffering from so much waswasas. I can't handle it I think I am always napaak. When I perform ghusl after I think I having done it right I don't know if all the hairs have got wet on the body. Could you explain to me a way that you would do it so every hair on the body gets wet so the ghusl counts because I think all my salaahs are not getting counted as well and this is really getting to me. It's on my head 24 hours a day I keep having a shower like 3/2 times a day because I think every time I do ghusl its not correct. I need your help

Q: Is it O.K to wash the feet while standing upright during wudhu without using hands to make khilaal between each toe, because I am over weight. I just thoughrally wash my feet by spreading my toes fingers while standind, I do that only when I sit at the masjid Wudhu Khana. While at home I make the wudu in a standing position, because of the over weight, it's hard for me to sit in the bath tub to wash my feet using fingers. Please Advise me for this.

Q: I don't know if all the hairs on my back got wet in ghusl and also I soaped the flat bit under the private parts and the arm pits. Would the rest of the hairs on the body get wet on there own under the shower? I see hair standing up, would they be washed?

Q: I think in the time of the prophet (Sallallahu Alayhi Wasallam) there were no soap so now after a wet dream should we need soap to wash clothes and body?

Q: I was told me that we cannot bleach our face because it coats our skin and ghusl will not be done. Is this true?

Q: After mani comes out, do you have to pass urine before ghusl?