Hello, @lavinia
Thanks for your question.
Actually, you can upload files bigger than 50MB. You can read more about this here: [New Feature] [Beta] Large file uploads - #10 by cal
However, do not forget that Bubble DB storage is limited, and in case you need to store a lot of files, you need to switch to another plan:
Please try to upload files without purchasing any of the storage plugins or connecting Youtube\Vimeo. In case you will be unsatisfied with the result, you can read more about our Files Pro - Multi File Uploader Plugin for Bubble | Zeroqode or AWS File uploader - Any size Plugin for Bubble | Zeroqode
We are looking to hearing from you soon.
Best regards,
Zeroqode Support Team