you are not corect ,people just dont experimenting alot.
my last 4 games as Arsenal as part of my tactical testing
https://www.youtube.com/watch?v=L4Z9KTswkIc City 4-0
https://www.youtube.com/watch?v=F2pc6DKCjPA Chelseas 3-1
https://www.youtube.com/watch?v=VZWbJDrxYTo Juventus 2-0
https://www.youtube.com/watch?v=DfZbdISQOFY Everton 4-0
I play pure 4-3-3 formation and I am doing testing with Arsenal without any tranings or match preparations with default squad.
I have also 4-3-1-2 formation what is also wotking wery good.
basicly I am polishing this tactics so I can start to play on my you tube chanel .
Goal will be to win Premiership in first season with smaller team like every year,that is mean reason why I am losing alot of time for testings,