What specifically are you hoping to remember. Just how far you were through the content? Which pieces of content you wanted to watch? Something else? All of the above?
I usually don't have problems with platforms forgetting how far through a piece of content I am, but for remembering stuff I'm interested in, I usually use "watch later" playlists to save stuff I wanna watch, at least on YouTube
For shows I use JustWatch, which shows which shows/movies are available on what platforms. For books there's goodreads and I think also a Foss/fediverse alternative
You may also wanna try grayjay which let's you watch, and also save content from various video/streaming platforms (including yt and twitch) to a playlist for later viewing. Not sure if there's a website or just an app, its pretty new