Hi DINOYVARGHESE, I am Paulo. I'm an Independent Advisor and an individual like you inclined to help.
If you can't turn off airplane mode using the dedicated key on your keyboard or on the action center, try doing option four in this article to disable it
https://www.tenforums.com/tutorials/15411-turn-...
(Disclaimer: Tenforums is a non-Microsoft website but the page provides accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.)
Let me know if this helps.