Still can't propagate roses - what am i doing wrong?

Usually it's one of three things: the wrong wood, too much water, or too much sun. Take cuttings from a stem that has just finished flowering, about pencil thickness and 6 to 8 inches long. Cut just under a leaf node, strip everything but the top couple of leaves, dip in rooting hormone and push it into a gritty, free draining mix. Cover with a clear bag or a cut bottle, keep it in bright shade, and keep it moist but not wet. Soggy mix rots them. Also some grafted roses just root badly. Shrub and climbing types are far easier. Expect a few weeks at least before any roots show.