You can buy the EDDT Berlin-Tegel by Gaya Simulations in the official msfs2020 marketplace. But when you have installed it, it results in crashing the sim when you try to zoom in the EDDT-area in the Sim Chart.
So Microsoft: Fix it or pay back the money!
The airport itself does not crash game. I landed there some days ago without issues. The CTD is caused by MSFS world map interface because Tegel was removed from game’s navigation database (it’s a closed airport but still used by helicopters). Trying to select it to start there causes a CTD as well once you click on its icon.
Cheers
Annoying indeed, but there’s a 3rd party fix for that: https://flightsim.to/file/22323/eddi-tempelhof-eddt-tegel-kpfn-panama-city-reactivation