I have a problem with certain applications such as Firefox and qBit not being allowed to write data to other locally mounted disks. I know there must be a way to change these permissions, please could someone let me know th
It will probably be because of firejail.
You might just need to whitelist the mountpoint.
firejail --build firefox will let you use firefox without restrictions, then tell you what directories you need to whitelist afterwards.
As a temporary workaround you could use
firejail --noprofile firefox to prevent restrictions, but not ideal for security.
Does parrot have a Wiki for firejail?
There is a wordpress site