This is not an excuse, there may be injured players in Fenerbahçe, but conceding 6 goals is very bad.
İsmail Kartal is a really bad coach. Fenerbahçe has won so far because its squad is very good. So I don't think Ismail Kartal has any influence.
Anyway, I hope they win the next game.
However, losing by 6 goals and only having one goal back was very embarrassing defeat, if you look at the quality of the two team, they were almost equal and many also made Fenerbahce the favorite in that match.
For the Turkish Super League alone, Fenerbahce managed to perform well and for group H in the qualifying round for the European Conference League, Fenerbahce actually seemed to be playing in condition that wasn't bad.
This is an embarrassing defeat for team like Fenerbahce.
I think Ismail Kartal is not bad coach for Fenerbahce considering that he has managed Fenerbahce twice and his performance is also quite good, even though in the previous match he lost by 6 goals but that cannot be said to be Ismail Kartal bad performance.
I sure that this big defeat is related to the problem of several Fenerbahce players suffering injuries and there are quite lot, even for players in defense or defender positions, there are already three who have been absent from several matches.
Ismail Kartal job is only to find or have several substitute players who are worthy and can be relied on so that in the future he can have a very strong squad in all positions.