This is how-to install Flat-file CMS with Wordpress and SQLite.
I use Grav as flat-file CMS before but Wordpress is far more popular and now it support SQLite.
So first you need to install a temp wordpress website as ussual, install SQLite Database Integration plugin.
Then install an actual wordpress after active this plug-in.
Remove your temp MySQL database and it’s all set.
Now you can move this website to any host that support Wordpress and SQLite.
Video how-to: