ALL google widgets are gone! I accidentally disabled my google app, and therefore the search bar widget disappeared. Since then there are NO "google search" widgets available at all... Any ideas? I have a galaxy s7
Answer is Samsung-centric since the device is a Galaxy S7 (Other devices most likely similar).

If you truly just disabled the app, you can re-enable it from the Apps Manager in the right-most tab/column labelled either 'Turned Off' or 'Disabled' or something similar. Re-select the app, select 'Enable'.

Once re-enabled, return to the place you would like it and hard-press on the screen until the opportunity to select 'Widgets' appears. Select and place.

Possibly another option: the appearance could be Launcher-controlled (like Nova). In this case, select the settings or options of the Launcher and re-enable the Google app.