uYou++ is an option for iPhone (installed through AltStore/Sideloadly.
Been using it for about two years now? Works flawlessly. Well, YouTube, if you’d wanted me to stay on the stock app you should have left the ‘press info and click do not show ad’ feature enabled.
Maybe reach out to the smaller artists, then? I’m sure most of them aren’t opposed to sending you a file if you pay