where can i get all verb conjugations and what site or whatever is good for studying japanese

i hate all the videos i watched until now because they talk too much and they dont show everything at once, they show one tging and talk about for the next 3 hours.
same with sites where they try to explain something they write too much. its just confusing and exhausting.
my book explains good and short but there is so much missing it only has 6 conjugations all the negative and polite forms are missing. i cant find anything that has all except sites that conjugate a specific verb.