I have a similar question… surprising that no-one answered this one!
How to find an OSM GPS trace with a keyword search? The only way I could find is to type this link https://www.openstreetmap.org/traces/tag/keyword and replace keyword with the keyword that you want to search (case sensitive), but that’s not very elegant.
How to find an OSM GPS trace on the map? You can display an overview of them, but how to select a particular one that you want to use for editing the map?