It's possible that Facebook has made changes to their policies or algorithms that have affected the creation of new accounts. It's also possible that there were specific reasons why your new account was banned, such as violating Facebook's community standards or terms of service.
If you believe your account was banned unfairly, you can try contacting Facebook's support team to appeal the decision. Keep in mind that Facebook's support team may take some time to respond, so you may need to be patient.
In general, it's a good idea to familiarize yourself with Facebook's policies and guidelines to avoid having your account banned in the future. You can also take steps to protect your privacy and security when using social media, such as using strong passwords, avoiding suspicious links, and being careful about what information you share online.