insert and put a leaflet on wordpress-widget

good day dear experts – want ot add a layer on wordpress – widget. question.- do i need to have a fully fledged open-streetmap plugin if i want to do so – or is it suffice – if i add such a resultpage – in a apropriate formate!?

note: this request can be runned in Overpass-turbo

cf https://overpass-turbo.eu/?Q=%5Bout%3Ajson%5D%5Btimeout%3A250%5D%3B%7B%7BgeocodeArea%3ADeutschland%7D%7D-%3E.searchArea%3Bnwr%5Bamenity%3Dschool%5D%5B!%22isced%3Alevel%22%5D(area.searchArea)%3Bout%20geom%3B&C=51.55658;12.44202;7&R

[out:json][timeout:250];
{{geocodeArea:Deutschland}}->.searchArea;
nwr[amenity=school][!"isced:level"](area.searchArea);
out geom;