RSS-Proxy can watch sites without RSS and inform on changes. Well worth self hosting it alongside FreshRSS. There are also solutions for watching Twitter, Faceb

RSS-Proxy can watch sites without RSS and inform on changes. Well worth self hosting it alongside FreshRSS. There are also solutions for watching Twitter, Facebook et el too. In todays technology there is no reason to just visit a website to check for updates and I find most sites I use do have RSS anyway.