Try to do so many apps per week, 7 or so is a good number, doing a lot sounds good on paper, but HR of different places talk and flooding with your resume makes you look desperate and therefore unemployable.
Create a schedule you can follow and try to have so much time dedicated to rest/enjoyment if possible, no matter how small.
McDonald’s has been too expensive for years, and it takes too long since they refuse to hire enough people and its usually a child doing the job of 5 grown adults. Fast food my fat ass, I can cook my own food for a fraction of the price faster than McDonald’s.