I just opened YouTube on my iPhone and realized there was no UI at all for seeing my subscriptions. I had to relaunch the app and notice right when it opens they show a subscriptions link at the top but it auto-hides. So what you need to do is tap on the screen and then tap on the subscriptions link. There’s no other reference to subscriptions anywhere. It’s almost completely hidden now.
I have “watch history” disabled, which turns YouTube from a wannabe TikTok into its former self. You get no algorithmic suggestions and you can’t watch shorts (unless linked to them directly or through subscriptions). So now the YouTube app essentially has no content unless you dig through hidden UI. This is crazy.