I have hotmail. Yes, I'm old. On the top of the page all the way to the right are 3 dots and when I hover over them it shows "more options".

I click on that and then click on "rules" then "manage rules", then "create new rule". Then I can name the rule, add a condition (contains the word "unsubscribe"), then add an action (move the the designated folder.) Boom, Bob's our uncle.