However, based on standard academic and technical literature:
If you are trying to open a file and see these missing font errors, try these workarounds: Export as PDF: Open the file in macOS Preview File > Export as PDF cid font f1 f2 f3 f4 f5 hot free download
Searching for "free downloads" of specific CID fonts carries significant risks: cid font f1 f2 f3 f4 f5 hot free download