Well from all my gathering, I think it's not easy to identify if not almost impossible especially in the big leagues but in some lower divisions I think it's way easier to fix a game as not much attention and focus is been thrown there. Match fixing isn't something that's regularly done and to some extent is even likely to be called rare or even not possible in some league.
Match fixing can happen if the organizers play with people who supervise the League and they have special positions but it is quite risky when it is known to the public. In the second division of the Spanish League there was a match fixing if I'm not mistaken and I don't really remember what year it happened. Now in the era of modern football it is difficult to do because supervision is getting tighter so if it is found out it will impact the club with very severe sanctions.
The drama of match fixing can vary such as betting or for teams that have already made sure to qualify for the next phase. Now we rarely find match fixing issues because league supervision is so tight and well coordinated.
That kind of thing must exist in many leagues even pro leagues, but maybe playing quite neatly and indeed this is very difficult to identify that there is cooperation or victory arrangements, score setting or violations and so on, because today everyone can communicate secretly so the fact is, I don't remember in the Spanish division match, cheating will always exist, not quoting the possibility even though technology is getting more sophisticated and arrangements are getting tighter, it's just that every limit always has a gap to be broken and remain safe.
I believe we've seen a lot of these circumstances already and most people think it's just human errors. What I think is that, these has been set up by someone from the inside who has connections from the gambling firms in an attempt to alter the outcome to their favor.
Gambling is rapidly becoming huge, and sports nowadays are becoming more of a business than being a sports itself.
These are just my opinion based on my observation. How about you? what do you think?
If you're not looking or you do not have a keen observation, you hardly will notice it and it is almost impossible to detect it if there's no TV coverage or camera to monitor the events.
Game fixing is deliberate concealment of action, unless you are very familiar with the team or a player you will not notice it, I once saw a game-fixing happening but it was hard to prove or verify it because the common alibi of out-of-condition is always there. It only becomes evident if the two teams are not good at concealing it and their action is very obvious.
And another alibi in a match is luck which will be very difficult to identify, making a mistake can be said to be a natural thing in a match but we don't know, maybe it's a fabrication that has been made beforehand to carry out arrangements that have been agreed beforehand with the team owner, gambler, bookie or whoever gets a big profit when doing it, especially if it is done neatly, it will be even more difficult to identify.