Don't stress too much, you're already doing an amazing work! I can't believe how far RahiTuber has come in a few months!
As a workaround, I've managed to kind of restore the un-clipped blend for my clipped shadows (using Multiply, I don't know if this approach would word for other blend modes) by reducing the layer's alpha by 75% (that's A:191 for anyone wondering) with the tint option.