Perhaps there was more match-fixing when technology was not common than now. We can't know this but in the current situation at least with the help of technology, match-fixing events may have been minimized. In addition, there is a fact called the match-fixing economy. I think you have a huge economic power. We don't know what's going on at the back door.
Match fixing always have the price, its more easy to have this if both parties are willing to participate and yes the technology also one of the reason why is this happening and seriously they also know how to adopt. I believe there are more match fixing in boxing since it only involves two boxer and its easy to throw the match on boxing. In other sports, you can also have this some is not easy to tell if its fixed or not but sometimes its obvious.
These days a fixed match is hard to point out even though we see some signs but we cannot totally prove it, that said, I bet that is still happening in some sports, either if it's football, horseracing, dart, or other sports but we certainly don't have intel about that because that information is only shared in closed and higher management. I agree, fixing a match now might be hard because of the improved technology.
I believe there are more match fixing in boxing since it only involves two boxer and its easy to throw the match on boxing.
I find this hard to believe especially in the upper tier where boxers are really carving their names in the industry to have a legacy before they retire. Maybe in the lower-tier where boxers are starting to create hype in their name, that said, there was a rumor that Jake Paul-Tyron Woodley fight was rigged and there are some videos that could somehow point out that it's rigged.