After downloading a file as large and critical as an OS ISO, you should always verify its integrity. Red Hat provides on the download page.
Red Hat has a strict subscription model. The only legitimate way to obtain the ISO is through an active Red Hat Subscription or a free Developer Subscription. Here are the three official channels: top download rhel 9 iso file
This is the standard hub for current corporate customers with active subscriptions. You can find various releases, including RHEL 9.5 and older versions like 9.2, under the Popular Downloads for Red Hat Enterprise Linux section. After downloading a file as large and critical
Red Hat provides several official methods for obtaining an ISO image, primarily depending on whether you are an enterprise customer or an individual developer. top download rhel 9 iso file