Filter list based on drop down selections

I have a results page set up for the records entered and I have a repeater list to display them, however, I would like the user to be able to filter the results returned using any combination of options from the 2 drop downs and 1 date selector.

They are all linked to the same Records database - the repeater and the dropdowns and data selector.
I have tried lots of code from Corvid and Wix but can’t get any of it working…

Can anybody please help me?? Am a complete newbie so please bear this in mind…I am unable to understand what parts of my database needs to be placed where in the example codes.