Everything is more complex as youtube because youtube has spent billions to make you get sucked in and make it easy to stay on the page.

Peertube is foss software and needs to be improved by a small number of paid devs and normal people like you and me.

You dont make a peertube account just like a youtube or google account. You can use mastodon for that and also subscribe to channels that way. It needs better documentation though. Feel free to ask if you need further assistance.