Hi, Mille
Library/List web part Dynamic filtering supports only one filter. This is by default and we have no way to apply multiple filters currently. Someone has raised a User Voice on this topic here: Enable Dynamic filtering with Connected Lists to use more than one filter. I would suggest you vote for this user voice. It is a place for customers provide feedback about Microsoft SharePoint products. What's more, if a feedback is high voted there by other customers, it will be promising that Microsoft Product Team will take it into consideration when designing the next version in the future.
If there are any misunderstandings, please let me know
Best regards,
Maycon Novaes
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