Adding a second dropdown filter to a database search

I do not know Java and have never coded anything in my life. I chose Wix because it was sold as simple plug and play and have been struggling to get search functionality to my databases. Following this forum, videos and examples I have managed to adapt a code successfully that returns results to a repeater based on input in a search box or a dropdown menu. I am trying to add a second dropdown menu and have copied the code as per the first one but when selecting an option from this new dropdown menu no results are returned in the repeater.

At this stage I tried to set the drop down menus to work independently of each other as I thought this would be simple. However what I actually need is that both dropdowns are interdependent. Any help or guide to the right direction is welcome.

There are many ways which you can use a dropdown with Wix.
https://www.wix.com/corvid/example/basic-form
https://www.wix.com/corvid/example/cascading-form
https://support.wix.com/en/article/working-with-the-manage-dropdown-list-panel
https://support.wix.com/en/article/working-with-the-connect-dropdown-panel#connect-a-list
https://www.youtube.com/watch?v=Lhq8X7m0Xic
https://www.youtube.com/watch?v=EhXed0u6wh0
https://www.youtube.com/watch?v=r0DLqkRDJ34
https://www.wix.com/corvid/forum/corvid-tips-and-updates/example-remove-duplicates-from-connected-dropdown-options

If you are still struggling later on, then simply come back to this forum and paste up your code so that forum users can help guide you along the way.

You can also search this forum fr previous posts too and you will find many of them.
https://www.wix.com/corvid/forum/community-discussion/dependent-drop-down-lists
https://www.wix.com/corvid/forum/community-discussion/dependent-dropdown
https://www.wix.com/corvid/forum/community-discussion/hide-drop-down-list-based-on-value-of-another-drop-down-list