I cannot login to my wordpress blog

If you have cPanel hosting, you may be able to login directly from the cPanel without a username or password.

Thank you, I am not sure what that is, sorry! When I login to my hosting site (1and1) I can see my files there on the server, ‘web administrator’ I think it is called in English.
in Spanish it says: “gestion de archivos”. When I click it, I can see all the wordpress site files there.

/
_MACOSX
logs
wp-admin
wp-content
wp-includes

is that what I am supposed to see?

You should have a bunch of php files also.
index.php
license.txt
and a whole list of files starting with wp-

I suggest you follow this guide:

https://www.wpbeginner.com/wp-tutorials/how-to-add-an-admin-user-to-the-wordpress-database-via-mysql/

In short, it shows you how to manually add a user to your site – where you decide the username and password yourself.

Later, when you can log into the site, you can delete the new user or change the password on the old one.

Wkr.
Morten

Thank you for your answer.
I went into MYSQL and followed the steps.

I can now login via:
https://sanneschouwenburg.com/login/.
Thank you so much. That was a great lesson to learn!

I can still not enter:
https://sanneschouwenburg.com/wp-login/ nor https://sanneschouwenburg.com/wp-admin/

It just gives me the 404 error like before.

Is this normal?