If yes, a valid free and private alternative that is reliable and has around 10 GB, but not Proton.
Read the terms of service to find out yourself. This is such a low quality post, it should not exist.
While I agree with @delosmzp that this post verges on being spam, since its here and might show up on a search result, ill provide the answer…
The terms explicitly state that users must not “open multiple free accounts”
For alternatives check The Best Private and Secure Cloud Storage Providers - Privacy Guides