You might find videos or forums offering "Flightradar24 Premium Account Generators" or "Modded APKs."
While there is no "free trial" in the sense of a permanent unpaid subscription without giving anything back, you can legitimately obtain a high-tier (valued at $499.99/year) for free by contributing to their tracking network. How to Get a Free Business Subscription flightradar24 premium account free
While Flightradar24's premium subscription costs around $3.99/month or $39.99/year, several methods can provide users with a free premium account: You might find videos or forums offering "Flightradar24
—the one that unlocked historical flight data, weather layers, and the ability to see 3D views of cockpits. and extended historical data.
For immediate access without hardware, you can use the official trial system: Subscription plans | Flightradar24
By sharing ADS-B data with Flightradar24, you receive a complimentary (formerly a Business subscription), which includes features like unlimited 3D views, no ads, and extended historical data.