I tried to change postgresql md5 to scram-sha-256 and I get FATAL password authentication failed

I'm using postgresql and as part of learning, I tried to change to login methods to have a more secure login methods. e.g. using scram-sha-256 instead of md5. I tried to change my password_encryption to scram-sha256 in postgresql.conf file, and changed pg_hba.conf METHOD to scram-sha-256 as well, you can see the changes in the configuration below:

# - Authentication -

#authentication_timeout = 1min      # 1s-600s
password_encryption = scram-sha-256     # md5 or scram-sha-256
#db_user_namespace = off
and 

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# IPv4 local connections:
host    all             all             127.0.0.1/32            scram-sha-256
# IPv6 local connections:
host    all             all             ::1/128                 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
host    replication     all             127.0.0.1/32            scram-sha-256
host    replication     all             ::1/128                 scram-sha-256

Then after restarting the server, I try to login using cmd when I get following error:

C:\Users\amir>psql -U postgres postgres
Password for user postgres:
psql: error: could not connect to server: FATAL:  password authentication failed for user "postgres"

I can solve the problem by changing everything to md5 method and ignoring password_encryption in postgresql.conf file. How can I resolve this issue? do I have to change the configuration to default then try to create user and assigning an encrypted password for them.