See, that's where you messsed up. You let it know you had a problem you wanted to solve with money. Now you get to play whackamole with bad DIY channels until you give that account a root canal.
Actually, if I'm looking at DIY videos on youtube, it means I have a problem I am NOT willing to solve with money. :-) I never really have the problem you are describing though. Youtube wants to feed me to videos I'll watch, and while it only does a passable job of it, it doesn't tend to give me roofing videos after I've watched one on roofing for too long if I don't click on any more.