It is really saddening to observe that my LaTex file got corrupted and the cause of it is unknown. I'm using Tex Studio as editor. The file size remaining big (say 150kb) but couldn't find any lines in that but columns do exist. I have dropped the zip file in overleaf to see if I could retrieve my .tex file but in vain.
I'm attaching the zip file in the following link if somebody could help me.
Looking forward to the stack exchange community for the continued help and service.
Thanks a lot.