Ads, premium, and such

I really only use it to watch actual cartoons as I largely don't watch anime anymore since I prefer to read the manga now. What alternative sites are there because if it comes to a head and I need to jump ship I want to know that where I go will actually have the stuff I like. Grew up with 90's and 2000 stuff but I like older cartoons like the original Addams family ones or Beetlejuice.