Hi there,
Check if you have any subscription quotas by chance? sometimes the Azure sponsorship subscriptions have limitations as to what you can deploy on them and to what regions.
You may try using a generalized image as explained in the following Microsoft reference and see if that helps you https://learn.microsoft.com/en-us/azure/virtual-machines/vm-generalized-image-version?tabs=portal
Also, it looks like there are capacity issues in a few regions and there were a few other users who reported similar issues in the forums. Below is one such thread and try to deploy the VM in West Europe as few customers acknowledged that this workaround helped them.
not able to create virtual machine as i am not getting option to select the size or my machine https://learn.microsoft.com/en-us/answers/questions/779457/not-able-to-create-virtual-machine-as-i-am-not-get.html
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