Hey Alex!
Yes I think this bar angle change you mentioned can help in this area as you said. As long as the adjustment isn’t to big where its then difficult to contact the ball well, brush across it and get the spin. The best way is to experiment with this slight angle change and also really trying to get a good acceleration through the ball to get it deep. Making good use of the body and legs to help as much as you can.
Let us know how you find it, Dan 🙂