How to get rid of a dangerous player

that's

what happened, Pedersen fouled again and also Auger managed to execute bad slidings until he finally got booked. Plautz missed a lot in the first half and wasn't always right with his decisions either.

but

in the second half he was good, especially in the last few minutes when Norwegian forward El Younoussi made a dive that was hard to recognize until we saw a repeat from a different angle.

match

why did these team managers wait to substitute invisible players for really good ones until the last 15 minutes?