As due to covid 19 the NDA 1 and NDA 2 exam have to be taken combined so there will me more aspirants apply this year totally. So the competition will be high. Also every year NDA paper is increasing its level so this time as both 1 and 2 paper will be slightly difficult also due to covid there were many international affairs and meeting so GS paper may be difficult more.
Also as so many aspirants the Cutoff may increase this year. So you have to be prepared fully.
All the best!