I know there are ways of creating custom filters with BloX, where we can pinpoint to a widget we want to affect but is there any solutions out there to have a filter WITHIN a widget? I provided some images of what I want to achieve.

I found a solution: https://www.binextlevel.com/post/filter-dropdown-in-widget, use his first comment to create the solution.

How to create a filter within a widget?