Best place to work casually?

I have a part time job with my days off being mid week, Tuesday to Thursday. I’m looking to get a casual job for Tuesday and Thursday morning till 12. Anyone know the best place to contact?

Tried McDonald’s just because theres one around the corner and I thought it would be easy to get, apparently working those days from 5am till 12 isn’t worth their time.

Edit: My part time job starts at 3am, so I’d be looking to find something with a similar start time.