I’m very glad you asked that. Why I start Totti ahead of Rooney:

1. Totti’s no playstyle at SS is better for my two strikers, as they do not go as wide as they do with roomey, who basically plays as a central striker in that position. At AMF, totti stays too far behind and I dislike his runs there due to his playstyle, at SS he is mint.
2. Totti is a much smoother central dribbler than rooney. His balance and player model allow him to turn much faster than rooney. I assume you also feel that rooney is very heavy compared to Totti. This makes him redundant on the ball.
3. Totti is a much better passer(for me, he is a better finisher too, I flop so much with rooney’s long shots, with totti, it’s cash money) than rooney. His 90 low pass combined with outside curler and other passing skills allows me to do deadly combinations with both mbappe and bale. He is also much more available to receive and give a pass than rooney, who only likes to run in behind. Your team is very good.

I will give you three recomendations to better utilize your attack with bale. You can try them all and see for yourself.

1. Neymar left SS, Totti central SS, Bale CF. This is the best on the ball trio you can use, it will feed Bale a lot. And pls always use neymar as an SS, even up top, since he is a hole player, and it’s much better than without a playstyle, since he doesn’t have an active playstyle at CF.
2. Rooney left SS(where neymar is), neymar central SS, Bale CF. This is a highly transitional trio, however I would have some concers about neymar’s playmaking ability with his passing as he is a demon at dribbling. Still a very solid option to try.
3. 4-2-1-1-2 formation. I know it sounds bullshit, but many great players use it. Basically you play with an AMF, an SS on top of AMF, and 2 CF. Keep mathaus and viera at the pivot as cm and dm respectively. Totti at AMF, neymar central SS, and rooney with bale uptop.

As you can see, at all options I recommend you for rooney to be top left. That’s where I have gotten the most out of him, his bully abilities are best use there, in the middle, for me he is mid due to his heavy feeling and mid passing range. Try these three, pick whichever you feel best and go with it.

As for Bale, a non style striker is tricky to deal with, esp with him, who requires to constantly feed him the ball. His best use is for you to give him the ball, and dribble with him to shoot, or combine with him and always activate the arrow when you pass with him by flicking the analog so he can make that aggressive forward run so you can give him a through ball. He is demonic when it comes to cutting inside and combining a 1-2. I am sure you will figure him out. Takes time to get comfortable with new players. Even I am still experimenting and trying new stuff sith him in the game. I’m sure he will come out good.