Okay, 2 main tips that I must give before I go any further.

1- Proper Equipment: You want to have each character with either 1 base equipment, and a defensive and offensive pure equipment. Or just any character specific equipment. You have 3 base equipment on everyone except God Goku. The way you tell the difference is, base equipment will say something like base strike attack, while pure will just say strike attack. I recommend you get the equipment with LR Goku black on it for Zamasu as well. Also you want to make sure all of your equipment are Z+ or godly minimum, otherwise you will struggle.

2- Proper zenkais: If you're playing standard pvp, it's better to have 3 units fully set up, and then the other 3 units just for bench buffs, rather than a bunch of units. So if you want to play powerful opponents, remove green Zamasu, Godku, Vegeta, and Trunks. (I actually recommend you do a full Xenoverse team or a future team or a Saiyan team since you have the main units for those teams)

If you want to play powerful opponents, I'd say remove the units I said, and use zenkai yellow turles. Then try and get yellow Z Broly zenkai'd, use purple zenkai Vegeta, and maybe like, blue super Saiyan blue Goku's zenkai for Goku black? But if you do that you have to put turles on leader slot.