Are wormholes real or fake?

Could you please clarify for me if wormholes are genuinely a scientific phenomenon or are they merely a figment of imagination? I've heard so much about them in science fiction, but I'm interested in understanding their authenticity in the realm of physics. Do they have any solid theoretical basis or experimental evidence to support their existence? Or are they merely hypothetical constructs that we've yet to prove? I'm really fascinated by this concept and would appreciate any insights you could provide.