Do you still need to buy teaching materials for teacher recruitment? Can I do the real questions over the years directly?

I suggest you buy real questions directly, and you can do two sets of simulation questions if you have spare time. I used to do all the real questions I could find over the years, then sum up some frequent test sites and find the corresponding knowledge from the teaching materials to memorize.

For the teacher recruitment exam, I think the written test is much less difficult than the interview. After all, the school chooses teachers who can give lectures. Nowadays, many schools have begun to interview directly for recruitment.

There is nothing to lose by reading more. I suggest you sum up the topic yourself, and you can work hard on the textbook in your spare time.