I want to get into yoga, but I struggle in doing so

I want to integrate yoga in my fitness routine, because I am pretty weak in balance and stress management. But when I try searching for stuff on it online, I run into two problems:

1. I get overwhelmed by the amount of content. A Youtube channel like "Yoga with Adriene" has hundreds of videos and dozens of playlists, each covering a different perspective and set of exercises. I don't know from myself what I want, so it leads to me unable to choose.
2. I either get impatient or roll my eyes at the way yoga is commonly talked about. Even if there's no mention of more spiritual elements, I feel prejudiced against the usually slow pace and mindfulness talk, even though that's precisely what I want to practice.

I have a membership at a small gym, but they don't have any yoga classes, and I don't want another membership for yoga coaching on top of that. Are there ways around this?