My answer: Yes.
The example below is for NFL only, but I am sure you can do it with any sports :)
First the motivation one of the main reasons the NFL is so popular is because of all the betting, both legal and illegal, that goes on. In addition, the betting lines make the outcomes that much more entertaining for the viewing public. Most people aren't aware that over 70% of all games are decided against the line in the last possession. The lines are so good, that bettors swing between winning and losing depending on what happens in the last possession in a vast majority of the cases.
Because of how bookies make money, they make the most when 50% of the risk is on each side of the bet They manage this by using lines to entice bettors to one side or the other. Figuring out how to influence outcomes to swing on the last possession adds to the bettors excitement, and because they losers were so close to winning, encourages additional betting, & the winners are usually betting again. That cycle raises the betting pools and feeds on itself.
The NFL also has motivation to feed the beast. The NFL is first and foremost entertainment. It's easy to forget that. More bettors, more games decided against the spread on the last possession = mort viewers and more entertainment. Who in the NFL office wouldn't like that?
So now to the how? The key person I'd want control over is the back judge (BJ). Why? Because he can easily set teams up with scoring options by how he calls pass interference, and defensive holding. Two judgment calls that are non-reviewable. In addition, there is so much downfield contact that calls can be justified on almost every play. You don't need too many calls per game to influence the outcome. Of the 16 BJ’s, you'd probably only need to control half of them to tilt the odds in your favor.
In addition to the controlled BJ’s, you'd need the head of officials (who controls both officiating crew assignments and evaluations), and the Commissioner, so ten total league people. While that seems like a lot, if you picked them appropriately, paid them right, and provided the correct positive and negative incentives, it's doable & doable over an extended period.
Like what I said in my previous post: "...a lot of my (sports) predictions aren’t based on players stats and records, but more psychology.. or just intuition..."
Final note: Sports betting, like table card games, stock market, cryptocurrency, etc are all high risk. As with anything, don't place your money in things you don't understand.
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