This is a dev release, so to install it you must specify the exact version:
pip3 install raylib==5.5.0.0.dev3
* Raylib version 5.5-dev
* New backends! Install `raylib` package for standard, `raylib_sdl` package for SDL backend with better controller support, or `raylib_drm` for Linux framebuffer. Do not install more than one package.
Please report in the comments whether these packages work for you and what system you are using!