Hello

Yes its much better to do MBA after some job experience rather than doing MBA directly after completing your Graduation because most of the big university of MBA like IIMs,XLRI and Symbiosis.Marks and Academic Marks matter in these university but if you have some job experience after graduation,you will get more preference than of those students who don't have any job experience in their past.

So yes,it is beneficial to gain some job experience than go for MBA.

Hope It Helps

Best Of Luck!