It would (and hopefully will soon) be fun to get new furniture options in the future. Though for me when I was new to the game, and also new to the entire AC world sometimes having less options was good, because it can be overwhelming in a blank slate situation like this. Like originally I think I had one red imperial dresser that I got from a balloon, so I just built my first room around what looked good with that.
when something seems intimidating sometimes narrowing the options can take some of the pressure off, so maybe choose some aribitrary color or item and just put stuff in to fit with that one thing. Like other people said, nothing is set in stone, you can move stuff around etc, forever until you like it.
the other thing is, just put together a room with a matched set, why not? You don’t have to start out making something amazing. Put some furniture together and live with it for a while.
or make the ugliest/ craziest/ creepiest room you can, sometimes that can be really freeing too.
I admit, my experience of the furniture thing is different, I didn’t play the other games so all the furniture is new to me and I don’t notice a lack - acnh is my baseline (and all the updates are totally new content for me). [sorry! I feel weirdly guilty for feeling like this]
But I think you can make something you like, if you take some of the pressure off, and just experiment.