Unfortunately this is all too common in the game these days. I have started to not log in for games and I'm actually winning more than losing. I prefer when the other manager watches because then I feel there is less chance of getting trolled.
We have seen many examples like yours especially since the 2019 update. Previously it would happen maybe once per season but now it seems to be more common than ever.
I dread playing teams with -20, -30 etc because the stats always show the oppo GK becomes Buffon, the oppo usually has a player sent off, you usually concede in the first 5 minutes, your star player cannot hit a barn door and every FK goes wide. You see crazy stats with shots on target etc.
Yep, we've all experienced this. It has been pushed to the Devs.