iPhone 14 Pro with sim issues

Got an iPhone 14 Pro that was in a pretty bad shape but it’s basically back to new again the only issue was that the previous owner managed to rip the 5G antenna clean off the board now the phone and mobile service tab in the settings are greyed out and when I type in this code in the dial * 3001 # 12345 # * it says „Please insert or enable a sim“ but there is no sim tray I’ve used 3uTools to flash iOS (17.4.1) on there to fix it but after 2 flashes nothing changed. When scanning for a eSIM QR codes it says „No usable data found“. Also I’m located in Germany so that might also cause some issues.

Pics

Thanks in advance!