GUYS I NEED SOME URGENT ADVICE 😭

So I recently purchased ARJUNA JEE 2026-27 batch. I started watching a few lectures of previous year from the app and find out one thing.....Saleem sir didnt include some topics like Significant figure in his lecture despite it being in the syllabus and also in the modules....I thought it was some sort of mistake so I went ahead and checked the other chapters and there also I noticed that some of the things that are present in NCERT are not included in his lectures.....is it just saleem sir or are the other teachers also like suchhh.... guys plsss help me out