I highly recommend this book as an accessible medium to approach building literacy and critical thinking. Common fallacies are explained in simple examples that have consistent illustrations that help deliver the material to diverse learners.
Read the whole book or order it at the link below.
https://bookofbadarguments.com/
TedEd is a great resource for educational content in video format. Well produced and short enough for modern attention spans videos like these help plant a seed in the mind of learners that hopefully prompts critical thinking in the future.
Additional Resources for Building Literacy
National Council of Teachers of English
https://ncte.org/blog/2020/03/literacy-just-reading-writing/
National Literacy Trust of the UK