Issue with large files (Snap version)

I know that this issue has been reported many times now. However, I could not find something that worked for me, because all of these guides are for the non-Snap version, they do not apply for me due to Snap being completely isolated. Can you please tell me how to edit “those” configs on the Snap version. Thank you.
(BTW I am using Ubuntu Server 18.04.4 LTS aarch64)