You can set things like training and youth development to the COM in FIFA. I think you can do it with transfers, too, but I've never actually tried to even sim transfers.
MLB The Show offers a March-to-October single season option and allows you to let the COM scout, sign FAs, make trades, etc., in Franchise Mode. NBA allows you to go through at the start of Franchise Mode and literally set to human control or COM control all the aspects of running the actual franchise, and it has for years.
These games all offer exhibition modes that are pick-up-and-play as well if you don't want to do all that extra stuff.
And again, it's not monotony to a large amount of sim players, who want to sim everything, including the act of managing a team itself! I'm sorry that you're not entertained, but you are in a minority of sim sports players. It's somewhat similar to me complaining about having to manage my party when I just want to fight some monsters in a JRPG...except that sports sims actually give you the option to manage or not manage that stuff and JRPGs don't.
I would definitely just suggest that you stick to arcade sports games, though! I enjoy arcade sports games as well, and they offer that pick-up-and-play approach that you're going for. However, most sim players are serious about the games actually simulating everything about the sport.
Some of us are so sick that sometimes, we don't want to actually play the game; we just want to do the "busywork." Shout out to my fellow Football Manager and OOTP Baseball players here. Um, if there are any of you at a Nintendo-focused website.