Meant to add - when I search I usually refresh and open the google sheet and search that, it's often a lot quicker then going through the filter option.

I agree here, and the UX is confusing around search / filter. Loads of websites have search bars and they are situated in the header at the top - exactly where the "Paste URL here..." box is. I constantly find myself typing a search term in this box and pressing enter and feeling really confused that it's not searching for anything. Then I have to go back and delete the link I created accidentally, and then try and remember what I was searching for, then I spend 10 minutes playing with the "Filters" tool and still can't find what I need.

I think you need to have a simple search bar at the top that just works. Then "Filters" is confusing (although technically correct, just no one calls it that"), call it "Advanced Search" instead and have a button to it next to the search bar. Could keep it on the header next to the new search field.

Also agree that filters doesn't really cut it in terms of speed and accuracy. Often can't find things and sometimes just want a simple search that just works rather then extra boxes popping up etc. with fields that aren't obvious. For instance I have a lot of links with "/yt/" in the url but if I just search "yt" or "/yt/" there are no results.