The least technically demanding keyboard compositions by Bach are found in volumes called "First Lessons in Bach" (or something similar). These compilations of brief and straightforward pieces are available from a number of publishers (e.g., Alfred, Kalmus, Schirmer, etc.); if you browse a bit at Amazon or Sheet Music Plus, you'll find what you need.
For Chopin, there are fewer pieces to choose from at an appropriate difficulty level for beginning pianists. Even though the selection is limited, a few publishers have compiled the most modestly challenging works in one place. Here's an example from Alfred:
https://www.sheetmusicplus.com/title/14-of-His-Easiest-Piano-Selections/17225982I think the suggestion of Schumann's
Album for the Young, Op. 68, was a very good idea, and I recommend it to you as well.
Happy playing!