how to get more stat points?

hi,

im at lvl 50 now and got a couple purple gear, but i dont know how to get more stat points... the build video that i follow has alot more stat points and he is lvl 50 too.

So how to get more stat points in the game?

https://preview.redd.it/zx9cffzt25td1.png?width=399&format=png&auto=webp&s=87e62ca34fabb2ba06b8f05cc7602b770b7743fd