Why My Lenovo Latop G505s(Bought 2 years back) is getting cracked on both the sides near power Button?

Change the facia. Nothing else you can do. After all, nothing lasts forever, right? If you really want to keep your laptop then maintenance is required, correct? Just like you require a haircut when you see it does not look good anymore. Simple.

Merry Christmas
May the Force be with you