Something that might be unpopular opinion, these amateur leagues or lower leagues tend to be more prone to match fixing as players will do anything for their financial wellbeing because the sport does get them paid fairly...even if it's not match fixing at the worst players don't keep themselves in their best sharp because of several jobs taken as pointed out.
But on the bright side, lower leagues are not a bad place to catch some upsets
So true because so many amateurs league have come out of nowhere and they also have betting sponsors and stuff like this and I cannot take those sports seriously and I consider them pure entertainment. Per example in my country we have some amateurs MMA league where Youtube influencers and social media creators along with national media are making fake stories out of nowhere that will eventually end with 2 guys in a cage , mocking each other and the sport. The funny part is that you can place bets on some local bookies here and people are actually gambling on them ( especially the youth ones who are watching a ton of influencers online ).