It's very unlikely but if you manage to get your flights at cheap rates, get a nice Euro rail pass or hitch hiking and go for accomodation options like couchsurfing, accomodation and food in exchange for jobs. Maybe then you can manage in 2500. I won't say it's impossible but it'll definitely be difficult.
Accommodation: Stay in hostels, budget hotels, or Airbnb. Travel: Use buses (FlixBus) and budget trains (Eurail pass). Meals: Cook your own meals or eat at affordable local spots. Free Attractions: Explore free museums, parks, and landmarks. Travel off the beaten path: Choose cheaper destinations like Eastern Europe.