I mean as far as screen recording goes - the best open source option is OBS
For transactions and integrated editing I'm not sure? Premiere pro is only 17 a month with a student discount.
Based on what I have seen, many content creators and professionals use tools like Camtasia, Loom, and Screenflow for screen recording and editing. They offer a range of features for editing, adding annotations, animations and even transactions. You may want to give these a try and see which one best fits your needs.
Roastd