You aren't in a bubble, there just aren't many. There are tech companies but they're largely copies of US companies built for the local market (DoorDash -> Deliveroo, Uber/Lyft -> Bolt, etc). Europe has twice the number of people so there should be twice the number of notable companies but it's a small fraction instead.

The US has a history of innovation and a culture of ambition, drive, and seeking financial independence. Europe is more concerned with regulation and bureaucracy.