If Flightradar24 is not sending free hardware to your area, you can build your own setup.
Using shared or stolen credentials violates Flightradar24’s Terms of Service. The company actively monitors concurrent logins and unusual IP activity. Accounts found violating these rules are quickly banned, making public lists of "free accounts" useless within hours. Legitimate Ways to Get Flightradar24 Premium for Free
As long as you keep the receiver online and feeding data to their network, they provide you with a free Business account. 2. Build Your Own Raspberry Pi Feeder
This is the safest way to test the premium interface risk-free.
If you only need premium features for a short project or a specific trip, use the official trial.