Money / side gig

I’ve listened to your series on money. I have a well-paying job and am in need of a side hustle that can produce a steady monthly income. I have some debt but my main need is fixing up my house. I want to fence my backyard for my dogs and finish my basement as well as add a second bathroom. I have several questions for you. 1- any podcast or website recommendation for successful side gig? 2- i will sell my stuff on ebay but that is a one time payment. Is it worthwhile to flip clothing etc on ebay in your opinion? 3- you Recommend having money over things, what is your opinion on home improvements? Is that something you would go into debt for, a new bathroom? I love your money advise! Thank you