It's my first crop and I had problems with li...

None of your pictures show any type of cannabis sexual organs or "pre flowers". The brown things you have photographed are "stipules" and have nothing to do with a plants sex, they are modified vegetive growths. If you go to week 7 in my diary "cannabis conundrums", I have posted pictures of both male and female pre flowers, as well as some hermie flowers, and these pictures may help you to determine what is happening with your plants.

Mouse is 100% right can’t even add something. So good luck. Keep the grow room light sealed!😎

A plant being near a hermie plant won't make it hermie and you can't pollinate a plant that's not in flower yet

I don't see any sex on this plant be it male or female. Them little dried bits at the node are normal and do not determine sex, both male and female plants have them, abit they are not normally dried that's just from some damage from mishandling I would say. Photoperiod plants can go hermi from light leaks when its in bloom, they need uninterrupted darkness to go into flower and when the darkness gets interrupted many times that's what causes hermi or reveging of the plant. Autoflowers do not care about light cycles and will boom under any.