How to know when football games will be unmanaged?

If I have an in-play strategy, making trades before the game has begun, and it turns out the game is unmanaged, I will be guaranteed to lose the bets I have placed… Is there any way to ensure this doesn’t occur?

Unfortunately, this is something that is not consistent and depends on the league. For certain competitions we can receive a confirmation about the match being managed minutes before kick-off. All top European leagues are managed in-play however for rest, you’d need to wait until the start of the match to know it for sure.

Thanks for the response. What are considered ‘top european leageues?’

English Premier League, Spanish Primera, Italian Serie A and similar.