From what I've read the CIA lost many of their agents due to rogue agents selling out info to foreign governments. And the agents that were killed were working in Iran and Russia. No mention of the Jason Bournes in China. In recent Meng Wanzhou case, 2 agents were exchanged for her and it was swept under the rug.
By all accounts, the era of human intelligence (HUMINT) work is over. Much of international spycraft nowadays is done through hacking and electronic surveillance. Human beings have proven to be the weakest link. HUMINT may make great movie plots but it is obsolete in the modern world.