Hello Giovanni Luca Matera
Welcome to Microsoft Q&A Platform, thanks for posting your query here.
Sharing some insights based on the details you have shared.
When 23H2 is deployed Resource bridge is deploy as part of it. All the the critical extension like VM and AKS are deployed on the resource bridge. These extension help in creating Azure arc VM from the portal and AKS from the portal.
However, as you mentioned that resource bridge was deleted, now you cannot deploy any workloads from the portal.
I would recommend you to open a support case. Support team will be able to check and help on this.
Hope this helps.
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