If you liked Friend 2, I definitely recommed to watch the original Friend movie!
Not all of these have spies or undercover agents, but judging from the movies you mentioned I think you might like them too:
Secret Reunion
The Berlin File
The New World
Tabloid Truth
The Target
These two are a different genre than the others, but they both feature people working undercover:
Daisy (more romance/melo focused)
My Girlfriend is an Agent (rom-com)
