May have more resources but I suspect googles servers also have some fantastic caches of common misspelling based on what your locale is and what most people are searching for.
A lot of that derived from aggregate data of searches that were more likely to be engaged with or lead to click through.
That kind of data could be used on a phone if they wanted to download a large cache of it every so often but since it could be time and location dependent.
Search: Olzempik
Right now… Olympics.
A few months from now and you’re in Washington state. Maybe you want Olympus?
Recent searches for diabetes… Ozempic?
Some of that is just too hard to reasonable calculate and cache on a mobile device.