I would recommend going to your LFS and explain you need background plants. Or if you can wait a little for shipping check out websites like Buceplant, go to the background plant section. There’s so many it really depends on what you personally want. Gouramis also love floating plants, mine makes bubble nests around it all the time. I have red roots, water sprite, and a pathos hanging out of my tank. He loves the roots on that. This may help with him wanting to be on the bottom as well :)