Your horoscope chart suggests that you can succeed in exams like NDA, where the outcome is such that you will be in long term service and working hidden from society activities in general.
Starting June 2022 and until July 2023, you have a period which can give you success with great hardships.
My advice is you should go for the 3rd attempt even if its the last and give your ultimate best. You will clear the exams.
Hope this clarifies your query.
Saturn-Mars dasha period being lord of lagna and 2nd and 11th respectively can fullfill desires of native. Also, saturn is sitting in house of service conjoining 10th house lord and aspecting Mars in 8th which can bring sudden outcomes. Saturn - Mars being natural malefics, the path will be trciky and difficult, but great potential for war like activities such as competitive exams which needs to stand out.