I really need some help with my landscaping this year

. I live in zone 5 (a) i think and I really want to pick up some new and pretty flowers for the summer.
Usually I just end up with geraniums because no matter what I do, I can't kill them, lol. But I find them a bit boring and want some more dimension to my flower beds.
I did order Cottage Farms Subzero roses two years ago from QVC and they were terrible. Each only had a few roses and even with proper care, they never came back up.
I really like "fluffy" flowers like roses, hydrangea, peonies, ect
I'm also starting some herbs from seeds and some tomatoes from seeds -- so any advice on those will be helpful
Thank you so much to anyone who responds, I am such a clueless gardener and I really want to create something beautiful this year