@Siddharth Thevaril Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
Personalizer is being retired. Starting on the 20th of September, 2023 you won’t be able to create new Personalizer resources. The Personalizer service is being retired on the 1st of October, 2026. More Info here: https://learn.microsoft.com/en-us/azure/ai-services/personalizer/whats-new
For the available alternatives, you may explore the options on migrating reinforcement learning to Azure ML Studio:
I hope this helps.
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