I had this exact thing happen in Duolingo. I remember being annoyed, because in school I had learned to say “comment t’appelles-tu” but Duolingo taught me “comment tu t’appelles.” Then it seemingly randomly switched back to the original one I knew, like I should have been using that the whole time.
What happened I think, is we left the “s” off of the end, so Duolingo marked it as wrong, but rather than add the “s”, it gave a different correction (the more proper way to say it). If you had put the “s” on the end, it would have been accepted as correct.
Do you have a library card? At my library I can reserve the books I want, and if they don’t have them they borrow them from another library in their system, and I get an email when they’re ready to be picked up. I also use the app Goodreads to track what I want to read.
If reading physical books is difficult, consider audiobooks as well!
For something sci fi/fantasy but more a serious/intense story:
A Deadly Education / the Scholomance series
Project Hail Mary
For more feel-good sci fi/fantasy:
The House in the Cerulean Sea
A Wizard’s Guide to Defensive Baking
The Long Way to a Small, Angry Planet