Dog walking

Does anyone have dog walking experience using Wag or Rover? I need to quit my current job in about 3-4 months because I need to focus on college. I have no time for school which is causing my financial aid to decrease which is a no no. However, I still want to have some sort of income, saving is very important to me and want to keep that up. I’ve heard things of people making over $200 in a day and I’m curious to know how to get to that level or just as a dog walking beginner. Any advice or your story?