It wouldn't be as bad as you might think without prediction - back in the days with "dumb" input method, the word choices would be listed by frequency of use, and you'd remember which choice the word you want would be.
So you'd type shi and click the first choice for 是, second choice for 时, etc without even needing to read the options since they'll always be in that slot. If there's a word you use frequently but is listed late in the list you can change that in the settings file. Same for shortcuts like bhys and you can always add your own shortcut.
The Chinese keyboard I use does not have internet access and only does prediction based on set phrases - eg if you type 时 it'd offer 間, 代, 事, 空 etc; if you type tmd it'd give you you-know-what, and I prefer it over the Google keyboard since my muscle memory can do most of the work instead of my eyes.
So you'd type shi and click the first choice for 是, second choice for 时, etc without even needing to read the options since they'll always be in that slot. If there's a word you use frequently but is listed late in the list you can change that in the settings file. Same for shortcuts like bhys and you can always add your own shortcut.
The Chinese keyboard I use does not have internet access and only does prediction based on set phrases - eg if you type 时 it'd offer 間, 代, 事, 空 etc; if you type tmd it'd give you you-know-what, and I prefer it over the Google keyboard since my muscle memory can do most of the work instead of my eyes.