Hello Spoorthi,
You can find the widget under widgets, so when you go to a page and add a widget it should be down somewhere at add in widgets.
Hope this helps,
Good luck!
Hi Spoorthi,
Marketplace modules only show the modules downloaded from marketplace.
But in your case, It is a widget.
So you can see the widget in the add-ons section of toolbox when you open page.
you can refer the below image for reference.