Hi, new player here. In the scouting menu->player search menu, there's an attributes panel where selected attributes show up. Next to each attribute there's a button/widget that lets you increase/decrease the attribute with the right analogue stick.
However every time you change the value this way, the focus area/"cursor" resets to the top of the player search menu, making this an extremely time consuming and frustrating task to do. It is so frustrating in fact, that I'm already considering a refund.