This is somewhat random, but the Amazon algorithm highlighted this course for me.
It's free for members on Prime Video for a few more days:
https://www.amazon.com/How-to-Play-Piano/dp/B07WJ6HXQQ/
It's available for $35 on sale here:
https://www.thegreatcourses.com/courses/how-to-play-piano
I'm no longer a beginner, but I watched a few sections of this course and could not help but think what a great teacher this is! $35 is not all that much to pay for a solid introduction to the piano like this one. That's probably the cost of a single in-person lesson.
The course is very well-rounded for adult beginners including elements of improvision, transposing, sight reading, rhythmic patterns, historical insights, challenge pieces, etc. I feel like she covers a lot of ground.
From a self-learning perspective, if I was a beginner, I think I would have done very well to start with a course like this rather than the gimicky Piano Maestro app that I actually started with.
By the end of the course, you'll like be well-equipped to figure out what's next... in fact, by the end of the course Dr Pike provides guidance on how to find a suitable teacher to continue learning and what you might aspire to.