But here's the catch, I don't have a "source" or "contact", I simply use a program I created that tracks suspicious bets, it uses AI and real time trackers. If someone is offering to "sell" you fixed info, it's usually a scam.
I have made over $2,000,000 with a starting balance of $11,000. I did not need to sell anything. The only problem is when the sportsbooks limit you or confiscate winnings. But that's what I call a strategic loss. For every $10,000 confiscated I make an average of $100,000+ profit.
A lot of people posting the same question:
"Do fixed matches exist?"

Of course they do!!! But you're not going to find it on the clearnet

You're better off tracking large bets placed on low tier matches or rapid odds drops. This can easily be done with some API's and python code.
Well I don't know about your methods of actually tracking these fixed games but to a level I actually feel that they are very high probability that almost all sites or person offering such services are all scam and highly not advisable for anyone to take part. The reason why I say this is because I had a friend who constantly brags of how he is got a sure vendor that sells these so called fixed games or odds to him and everytime he would urge me as a friend to actually make a move to get one of which I knew very well that of all the games he bought only two have actually played the way they were predicted which proves that the only thing that is ever fixed is the certainty that their is no such thing as fixed games being sold .