There was an issue regarding Association matches this weekend, but this weekend only. So if you lost with unusually large scores it's because you played against higher level opponents.

Here is the link, you'll find information about this issue there.
https://forum.topeleven.com/bugs-tec...%EF%BC%9F.html


But this situation is not normal, so if you lost heavily prior to this weekend it was because your opponents played better or got a bit lucky.