If it’s a mobile problem, get Newpipe. It’s not on the App Store, you have to go on the website to get it, but it absolutely is worthwhile. Firefox and you block still works just fine though on desktop.
You said App Store. Can Apple users install NewPipe? I have it on Android, but my wife uses iOS, and we thought she wouldn’t be able to use it.
For my daily driver iOS device I use invidious webui, but my mrs + kids are all fine using yattee as an app frontend to invidious.