2) At page content level

Cannibalization occurs when you have your page contents having closely related topics/similar topics; the correction is far more voluminous than the example above. The first assignment is to find out those pages competing with each other and the right approach to tackle the problem.

/blog/how to clean leather bag/ aiming at people to discover the logic of washing leather effectively

/blog/bags-cleaning-procedures/ To show the steps to clean several types of bags.

How to Fix the Problem of cannibalization?

The very first action is to pinpoint the kind of cannibalization you experience on your website, then be flexible enough to tackle the error because every solution might not go in the same direction.

301 redirection

Do you need to examine the pages that are affected if you still need them?

If your response is no, you have to adopt 301 redirects.

Creating a similar article you posted many years ago, you need to redirect one of those articles; specifically, the old articles have a great backlinks capacity.

Page A: blog/how to wear-shuttle-bags June 2018

Page B:blog/how to-wear-shuttle-bags in 2021 October 2020

Examine the page A and check the backlinks, discover how many keywords ranks.

Action

If page A has the potentials of ranking, quickly do a 301 redirect from page B to page A, the internal links should be changed to data the metadata of the first page if find it essential.

If A doesn't have enough equity: kindly do the opposite, redirect page A to B.