Unwatched: RSS Video Player
iOS iPadOSWatch Later Queue for YouTube
Untwatched
is a great and free alternative to Play: "No autoplay, no
alorithmic bottomless feed. Just the Videos queued up in the order you
want to." I would suggest just downloading it and trying it out. And if
you like it, sponsor the project on GitHub.

apps.apple.com/us/app/unwatched-rss-video-player/id6477287463