I’m experiencing the same issue. The opposing team often has two defenders aggressively defending me, but even with aggressive defending instructions switched on, my players just seem to orbit around the opponents like complete idiots, especially the supporting defender.
There’s not much we can do; the game is broken and unbalanced, heavily favouring one side.
Do you play Squad Battles? If so, try this: play Squad Battles on Amateur difficulty, and ensure that your game settings outside of Ultimate Team also have Amateur as the default difficulty. You might get a few easy matches, but by the next day, it’ll likely go back to being unplayable.