Should I accept the job offer?

I'm am recent college graduate (computer engineering) with no work experience and have been searching for a full time job for about 3 month. I received a federal job offer with a salary of $50k. The salary is far lower than what my desired job salary ($70k). I understand that federal jobs comes with lots of benefits and I am also tried out from job hunting, applying and getting rejected, so I am tempted to take the job. I don't know if I should keep looking for a better offer or take the job.

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