I can't establish connection in datastax message: Cannot open connection

I have this problem with the connection because I have tried every way and it doesn't connect meenter image description here [otra opción (https://i.sstatic.net/Scw8J.jpg) I have tried to do several processes and I don't know why it doesn't connect. help me please!

It looks like you're trying to connect to Cassandra on your local machine, on the default port of 9042.

If this is not working, I would check the following:

• Cassandra is indeed running on your local machine (verify with nodetool status).
• Either listen_address or rpc_address are bound to localhost. The address shown in the output of nodetool status is the address that should be used to connect.
• You are providing the correct username and password, if CassandraAuthorizer and PasswordAuthenticator are being used.
• You are providing the correct SSL/TLS certificate if client-to-node SSL is enabled.
• Also, as of Cassandra 4.0, connecting with client-to-node SSL enabled now happens on port 9142, while regular, unencrypted traffic is still on 9042.