I have been as vocal as many about Cooper's style of football and team selections last season but I am going to play devil's advocate for a moment and say that he certainly did try to take a number of steps to improve our attacking football:
Tried to sign Harry Wilson but Cardiff offered Liverpool more than we did
Signed Morgan Gibbs White to play no 10, got injured in like 2nd game of the season, Wolves recall him after 1 game returned from injury
Tried to sign Michael Obafemi from Southampton on loan only for player to get injured the day before his medical
Signed Conor Hourihane, he started like a train but ended the season practically going in reverse
Signed Jordan Morris to play wing/up front, got serious injury just as he finally seemed to be getting up to speed
Signed Paul Arriola to play on the wing, allegedly never shook off a niggling injury from when he signed
I haven't counted Morgan Whittaker in the above since he was signed on with a view to the development team rather than the first team.
While the football we were subjected to last season was not very inspiring, I do have to say that I think that Cooper had more than a few spots of bad luck when trying to remedy that situation.