I mean… just about everything that’s old-world, north of Africa, west of the Urals, and north/west of Istanbul is considered Europe.
The extent of Europe is very broad, with even Iceland being considered a part of it; and it isn’t bound politically. For example, Denmark is considered to be in Europe but Greenland (a territory of Denmark) isn’t, but then again, the Faroe Islands (another territory of Denmark) is.
You might be thinking more along the lines of the EU (European Union) which is the third iteration of the dominant political/economic entity in much of Europe, born in 1993 when it legally became a person. Where the EU actually reaches across the entire globe due to overseas regions, collectives, and municipalities.
Albion voted to go fuck itself, so speaking as an European it should go and do that, until it votes to come crawling back and passes a looong vetting process (and this time no weird money, and we get to set the colour of the passports, even though every other member can choose theirs freely).