macos – external pendrive is read only

When I connect my external memory unit (FAT32) in macbook pro (OS: Mojave), it is being detected but nothing can be copied to pendrive.
It seems that there have been some restrictions on the mac in my office so that pendrive remains in read-only mode.

You need help to eliminate the read-only protection of pendrive.

PS: this problem can be solved by changing the registry in Windows but I do not know how to delete it in mac.