Before providing a write-up, it is necessary to clarify the legal and technical reality of the request. There is no legitimate way to play Animal Crossing: New Horizons (ACNH) on a school Chromebook, a work computer, or a standard PC via an "unblocked" website. Hyperphallic Ep1 Umbrelloid | Link
However, if you are looking to play Animal Crossing on a PC legitimately, or if you are interested in the homebrew scene, here is a proper write-up on the current state of playing ACNH outside of a standard Switch. When users search for "unblocked install," they are usually trying to play a game on a restricted network (like a school or office) on hardware that isn't a Nintendo Switch. Sd+card+uupdbin
Animal Crossing: New Horizons is a proprietary Nintendo Switch exclusive. Websites claiming to offer "unblocked" versions are typically scams designed to steal data, distribute malware, or trick users into completing endless surveys. Furthermore, downloading game files (ROMs) for games you do not own is illegal in many jurisdictions.