I'll try to learn how to meditate in my very little and "overpopulated" home, where I have no peace and chance to spend the time alone

i too thought like that until i tryed the Toilet Meditation at work and at home
There you are alone on your own

Start with toilet meditation for 5-10 minutes and with time increase as mucg as you feel.
Remember this is not a race.
Take one step at a time

ok
If you need guidens please feel free to ask publicly or via PM.
Remain relaxed