Yeah, it's really possible especially those local games that bookies also offered there are chances that fix matches can be executed and either the team owners or the players or also the refs are involved, there are sequences that those types of games are controlled by numbers of facilatators who really taking advantages of those local gamblers who loves supporting this kind of games.
The involvement of the players or the managements will surely affects the outcome of the game, as they are part of the manipulation and execution of the plan.
That's true for instance the case of Patrick Matasi the goalkeeper of Kakamega Homeboyz a local league in Kenya who got suspended for 90days from football activities cause he was caught for match fixing, match fixing is very common in local leagues but Patrick made it so obvious and dragged the attention of the media which was why he became a scapegoat and was suspended, although I might be wrong but I do this believe that it's on-going in the big leagues through the aid of VAR cause it's becoming very
unbiasedbiased of recent and more people are beginning to notice it.