Hope that goes well for you! ^^
You could always go door-to-door in your neighborhood (or in a neighborhood closeby) and either ring the doorbell or post a small form/letter/card stating what jobs you can do:
Gardening, cleaning cars, walking dogs, etc.
Something outside, something safe. Never head inside someone's house and make sure your parents or whoever knows when you are working in which area (just in case, depending where you live, if that makes sense).
Like for example: There are lots of flats where I live with dog owners and elderly who need to walk their dogs, but a lot need help with that, so younger people implore their help to walk the dogs instead.
And I used to wash cars, and there were two boys from the neighborhood who -a couple of years ago- asked if they could do garden stuff. We gave them our equipment and told them what to do and paid them afterwards.
So that's always a thing or so you could do if McDonald's doesn't work out or any other place

Btw: You could always check Elderly Homes as well to see if they could use any help at all.