
You won't lose data if you make use of the same account for the new Personal subscription. However, you will have to cancel Microsoft 365 Family and order 365 Personal as a new subscription.
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When I change from family to personal subscription will I loose all my cloud storage and other platforms
You won't lose data if you make use of the same account for the new Personal subscription. However, you will have to cancel Microsoft 365 Family and order 365 Personal as a new subscription.
Stefan is right. As long as you keep the same email address when you switch subscriptions, you will retain all your cloud storage.