@karlalilian Would you like to make something together?
All you really need is code gluing of main mechanics and assets assembly in game engine. All the rest can be done by you which would knock down price significantly. Im a programmer and game developer so i can help you with that if you want to help me with game design and picking of 3D assets and music.
I would avoid 2D as its not really immersive and considering your aiming at 15-20 its much easier to get it inside of the 3D world.
The only place where i would spend extra money would be paid 3D art (or 2D depends at what your aiming at)
For stuff like this for example: https://assetstore.unity.com/packages/3d/environments/fantasy/stylized-christmas..
but still there are plenty of free ones.
I also have collection of paid assets that i can integrate instantly into it like this for example: https://assetstore.unity.com/packages/tools/utilities/cozy-stylized-weather-3-27...
50$ and you have a deal
@lemon_rider on Discord.