Should I just do any job?

I went to vocational school for about 4 months and I graduated in December with certifications in Excel PowerPoint and Word (the school is a government based program and I got my certifications through school as well as a completion certificate in Business) and I have applied to many clerical and office jobs yet get turned down left and right.

I'm thinking about just applying for any job right now (even fast food) until I save up enough to move out. Should I do this or just keep waiting until I find a job that fits what I'm looking for? To be honest I would feel embarrassed working in fast food considering I'm in my 20s and I feel like I went through all that schooling for nothing. :/