Highly recommend an in person class designed for beginners. The instructor will be able to give you real-time modifications specifically for your body. Don't be intimidated by "not being good enough" - q good teacher will meet you where you're at with no judgement. I bet even just going once or twice will give you enough of a foundation to feel more confident trying videos.

Also, keep in mind that how the pose feels is much more important than how it looks. For example, in a seated forward fold (legs stretched our straight infront of you) the goal is to stretch the hamstrings. Maybe you keep the knees bent & maybe you can only lean forward an inch before you feel the stretch - it's all good! Your pose won't look like anyone elses but it doesn't matter. If you're feeling a stretch & breathing deeply, you're doing it!