Don't ask me how I know but this is what I can tell you,
Networking jobs can be shit if you don't have the following;
- Good employer (Been part of the business vs Been a support service sort of thing)
- Good University (Mora, Pera, Ruhuna, SLIIT bla bla bla in that order)
- Certifications (CCNA is shit now. Either need CCNP or something Higher. Learning about new Cisco technologies might help)
This market is sort of saturated. So you need to have specialized skills in a niche area.
Cyber Security is a good it is a niche area. If you start with some Systems Integrator and manage to do some certifications such as CEH, CHFI, OSCP, OSCE, CISSP, CISM, CRISC etc you stand a very good chance of earning a shit load of money. Also you have a very good chance of migrating or working abroad like in SG, Mid-East
Dev Ops - Well I don't know shit about it.