I haven't heard any of the other claims you mention. I'd say it is most unlikely to be true.
"i heard the US, Qatars royal family & saudi royal family are giving these soldiers pills/drugs/shots to make them stronger "
No, you did not.
Money and financial security for their families abroad. Once they had the full payment they will leave Assad and Syria.
they are attempting to build a home for the next generation of jihadist terrorists to attack the west!
Mercs fight for money,it's what "mercenary" means.
i heard the US, Qatars royal family & saudi royal family are giving these soldiers pills/drugs/shots to make them stronger & not feel anything when they get shot by other soldiers? is all that true? Their have been reports of the mercenaries being shot alot of times & they still wouldnt die? They have even became so wild & strong they started eating their enemie soldiers & having BBQ's & eating their chopped heads and body parts? WHY? whats going on!?