I can't use root account to create Glue job or Glue Crawler

The AWS root account should generally not be used for day-to-day operations due to security best practices. Instead, you should create an IAM role or IAM user with the appropriate permissions.

Hello.

If your AWS account is managed by Organizations, please check whether Glue operations are not denied by SCP.
If you are not denied by SCP etc. and cannot operate as root user, there may be a problem with your AWS account, so I recommend that you open a case with AWS Support under "Account and billing".
Inquiries under "Account and billing" can be made free of charge.
https://docs.aws.amazon.com/awssupport/latest/user/case-management.html