I use Houdahspot on MacOS for this. You can either invoke it globally with a custom hotkey (I use hyper ‘s’, for “search”), or from within a specific directory

I use Houdahspot on MacOS for this. You can either invoke it globally with a custom hotkey (I use hyper ‘s’, for “search”), or from within a specific directory via an icon it adds to the top right corner of Finder.