The domain name is bound to AWS Global Accelerator. When my web service fails, how do I set up a failover to a maintenance page?

The domain name I applied for in godaddy is bound to AWS Global Accelerator. The endpoint of AWS Global Accelerator adds two ALBs in different regions. The ALB listens to the EC2 of the web server. When both of my web services fail, how should I set it up? Failover to a static maintenance page. The current idea is to add an A record through the R53 regional hosting to failover to the static website hosting of the S3 bucket of the same domain name, but it does not take effect and cannot jump to the S3 static page. How to set up to jump, Or is there a third party hosted maintenance page that fails over in some other way