Maybe it isnt happy in that spot. Have you ever noticed that plants of the same variety will grow good in one place, but look sick in another? It is because where they are thriving they are real happy. Roses like the sun, but will also thrive in partial sun

You want some flowers? Use earthworm castings, you will not believe it is the same rose. Even the ones not in their happy spot will get happy

We throw a shovel full of castings on each rose in the spring, and they become blooming idiots LOL.

When dead heading a rose, go down the stem until you come to the second 5 leaf cluster and clip right there.