Do referee officials always have a fair advantage?
As far as I know, becoming a soccer referee is not easy, let alone a World League referee, to become a referee they are bound by a code of ethics, promises and oaths, without being allowed to accept bribes or interference from any party.
Referees must have sportsmanship and neutrality as well as objective and professional qualities in every match, all of this must be upheld by a referee, especially referees in international leagues such as the European League, England, World Cup and so on, a referee really has to be fair and neutral without intimidating one of the teams.
For referees, what the OP means is that if the referee sides with one of the teams, it is clear that the referee has violated the code of ethics and oath, what's more, there is an element of personal gain, whether it be certain factors, it has been proven that VAR technology shows the actual results that occurred. I am sure that if the referee violates the code of ethics and oath, if it is carried out for the first time, perhaps this match will be the last match he officiates in the football league.