Securing an Adsense account is no joke.

Writing the right posts is one of the efforts. Taking into consideration all the little things is another. Not to mention some sleepless nights before the final approval.

But, the easiest thing for Google is disabling or banning that account.

And till now, it's still a mystery to some bloggers why Google ban publisher's Adsense accounts.

The obvious reason is invalid traffic and clicks. Non-compliance with certain policies is equally known.

Experiences shared in this post have shown that there is more to your account being taken from you.
https://www.blogplusdollars.com/2019/09/the-real-but-unusual-reasons-google.html

Your woe may not be because of what you're doing right now or what you will do in future. It may boil down to what you have done in the past.