I recently painted my bedroom wall green , i want to get a wallpaper but what goes with green?

A lot of things go with green, depending on the shade of green. A print that features leaves, vines, trees, etc. if the green is right. A stripe with your shade of green. A print or pattern in beige, tan, or a pastel you like with just a little of that shade of green in it.

blue, brown, pink, white, purple, etc.

It would depend on what color green. Lime, kelly, moss, sage, avocado, forest, etc.
Most colors can go with green. Depending on the shade of green you can use blue, yellow, pink orange, brown, purple, ecru, etc. Just make sure the complementary color is darker or lighter in intensity than the green. If it's a light green, use dark pink, dark purple, dark blue, etc. and the opposite if it is a dark green.

Yellow, blue, aqua, white, pink.

It depends what type of green. If it's mint green, you may wanna go with white furniture . If it's dark green, you may wanna go with beige furniture . If it's just regular green, go with light brown furniture

What about a floral pattern wall paper?