How to change the password in the database
First connect to the database. In this example we use phpMyAdmin, but this can also be done with other tools/applications.
When you have logged into the database, call the table "user".
In the table you find the column "password" (1), in this column the password is stored hashed.
This means that you cannot enter your desired password here directly, but must use the corresponding hash value.
To change the password to "demo", you can use the following hash
$2y$10$wb70pKdqVSYWUc8AbdkR3.cLJS1PHeX10XwQD99nNmZrrOsCVTjne
You can now log in with your user and the password demo.
Of course you should then change this password in the Admin in the profile settings.