No network available on Nokia E7

https://preview.redd.it/02228r75c5fe1.jpg?width=900&format=pjpg&auto=webp&s=be8f61a37a3ecf10da65b5138ac50dd46abbd245

Got a refurbished e7 today, it was on belle refresh & when i insert my sim, it does detect the sim and restarts the phone. The problem is there is no network on the phone. It says "no network available" on the notification tab. And no, I didnt select offline mode when the phone restarted.

To try and fix this i hard reset the phone but didnt work & lastly i just flashed a custom delight firware on it, which made the phone very smooth but no fix to my actual problem. There is still no network on the phone. I have tried other sim operators but the problem is still there.

Can someone help me out ?