What are the odds of pulling a champ from a BND hero+ pack

I'm curious if im really just that unlucky ( i believe i am just looking for confirmation lol).  I've done and completed solos/field passes for every promo we've had.  Whether it's been pregame access, preseason standouts, campus heroes, game time, unstoppable, unreal moments, or even most feared and I have not pulled one champ from the hero+ bnd packs we usually get from the field passes.  I understand n absolutely expect to NEVER get anything good from the lower overall packs (God forbid) but **bleep** not even one n each promo gives you multiple  bnd hero+ packs/chances and just amazing to had not even one pulled.  Probably just not going to waste my time doing these solos n objectives anymore.  Def hasn't been worth the time for me at all